PHP7函数大全（4553个函数）

a

函数	说明
abs	绝对值
acos	反余弦
acosh	反双曲余弦
addcslashes	以 C 语言风格使用反斜线转义字符串中的字符
addslashes	使用反斜线引用字符串
apache_child_terminate	在本次请求结束后终止 apache 子进程
apache_getenv	获取 Apache subprocess_env 变量
apache_get_modules	获得已加载的Apache模块列表
apache_get_version	获得Apache版本信息
apache_lookup_uri	对指定的 URI 执行部分请求并返回所有有关信息
apache_note	取得或设置 apache 请求记录
apache_request_headers	获取全部 HTTP 请求头信息
apache_reset_timeout	重置 Apache 写入计时器
apache_response_headers	获得全部 HTTP 响应头信息
apache_setenv	设置 Apache 子进程环境变量
apcu_add	Cache a new variable in the data store
apcu_cache_info	Retrieves cached information from APCu’s data store
apcu_cas	Updates an old value with a new value
apcu_clear_cache	Clears the APCu cache
apcu_dec	Decrease a stored number
apcu_delete	Removes a stored variable from the cache
apcu_entry	Atomically fetch or generate a cache entry
apcu_exists	Checks if entry exists
apcu_fetch	Fetch a stored variable from the cache
apcu_inc	Increase a stored number
apcu_sma_info	Retrieves APCu Shared Memory Allocation information
apcu_store	Cache a variable in the data store
apc_add	缓存一个变量到数据存储
apc_bin_dump	Get a binary dump of the given files and user variables
apc_bin_dumpfile	Output a binary dump of cached files and user variables to a file
apc_bin_load	Load a binary dump into the APC file/user cache
apc_bin_loadfile	Load a binary dump from a file into the APC file/user cache
apc_cache_info	Retrieves cached information from APC’s data store
apc_cas	用新值更新旧值
apc_clear_cache	清除APC缓存
apc_compile_file	Stores a file in the bytecode cache, bypassing all filters.
apc_dec	Decrease a stored number
apc_define_constants	Defines a set of constants for retrieval and mass-definition
apc_delete	从用户缓存中删除某个变量
apc_delete_file	Deletes files from the opcode cache
apc_exists	检查APC中是否存在某个或者某些key
apc_fetch	从缓存中取出存储的变量
apc_inc	递增一个储存的数字
apc_load_constants	Loads a set of constants from the cache
apc_sma_info	Retrieves APC’s Shared Memory Allocation information
apc_store	Cache a variable in the data store
apd_breakpoint	Stops the interpreter and waits on a CR from the socket
apd_callstack	Returns the current call stack as an array
apd_clunk	Throw a warning and a callstack
apd_continue	Restarts the interpreter
apd_croak	Throw an error, a callstack and then exit
apd_dump_function_table	Outputs the current function table
apd_dump_persistent_resources	Return all persistent resources as an array
apd_dump_regular_resources	Return all current regular resources as an array
apd_echo	Echo to the debugging socket
apd_get_active_symbols	Get an array of the current variables names in the local scope
apd_set_pprof_trace	Starts the session debugging
apd_set_session	Changes or sets the current debugging level
apd_set_session_trace	Starts the session debugging
apd_set_session_trace_socket	Starts the remote session debugging
array	新建一个数组
array_change_key_case	返回字符串键名全为小写或大写的数组
array_chunk	将一个数组分割成多个
array_column	返回数组中指定的一列
array_combine	创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值
array_count_values	统计数组中所有的值出现的次数
array_diff	计算数组的差集
array_diff_assoc	带索引检查计算数组的差集
array_diff_key	使用键名比较计算数组的差集
array_diff_uassoc	用用户提供的回调函数做索引检查来计算数组的差集
array_diff_ukey	用回调函数对键名比较计算数组的差集
array_fill	用给定的值填充数组
array_fill_keys	使用指定的键和值填充数组
array_filter	用回调函数过滤数组中的单元
array_flip	交换数组中的键和值
array_intersect	计算数组的交集
array_intersect_assoc	带索引检查计算数组的交集
array_intersect_key	使用键名比较计算数组的交集
array_intersect_uassoc	带索引检查计算数组的交集，用回调函数比较索引
array_intersect_ukey	用回调函数比较键名来计算数组的交集
array_keys	返回数组中部分的或所有的键名
array_key_exists	检查给定的键名或索引是否存在于数组中
array_map	将回调函数作用到给定数组的单元上
array_merge	合并一个或多个数组
array_merge_recursive	递归地合并一个或多个数组
array_multisort	对多个数组或多维数组进行排序
array_pad	用值将数组填补到指定长度
array_pop	将数组最后一个单元弹出（出栈）
array_product	计算数组中所有值的乘积
array_push	将一个或多个单元压入数组的末尾（入栈）
array_rand	从数组中随机取出一个或多个单元
array_reduce	用回调函数迭代地将数组简化为单一的值
array_replace	使用传递的数组替换第一个数组的元素
array_replace_recursive	使用传递的数组递归替换第一个数组的元素
array_reverse	返回一个单元顺序相反的数组
array_search	在数组中搜索给定的值，如果成功则返回相应的键名
array_shift	将数组开头的单元移出数组
array_slice	从数组中取出一段
array_splice	把数组中的一部分去掉并用其它值取代
array_sum	计算数组中所有值的和
array_udiff	用回调函数比较数据来计算数组的差集
array_udiff_assoc	带索引检查计算数组的差集，用回调函数比较数据
array_udiff_uassoc	带索引检查计算数组的差集，用回调函数比较数据和索引
array_uintersect	计算数组的交集，用回调函数比较数据
array_uintersect_assoc	带索引检查计算数组的交集，用回调函数比较数据
array_uintersect_uassoc	带索引检查计算数组的交集，用回调函数比较数据和索引
array_unique	移除数组中重复的值
array_unshift	在数组开头插入一个或多个单元
array_values	返回数组中所有的值
array_walk	使用用户自定义函数对数组中的每个元素做回调处理
array_walk_recursive	对数组中的每个成员递归地应用用户函数
arsort	对数组进行逆向排序并保持索引关系
asin	反正弦
asinh	反双曲正弦
asort	对数组进行排序并保持索引关系
assert	检查一个断言是否为 FALSE
assert_options	设置/获取断言的各种标志
atan	反正切
atan2	两个参数的反正切
atanh	反双曲正切

b

函数	说明
base64_decode	对使用 MIME base64 编码的数据进行解码
base64_encode	使用 MIME base64 对数据进行编码
basename	返回路径中的文件名部分
base_convert	在任意进制之间转换数字
bbcode_add_element	Adds a bbcode element
bbcode_add_smiley	Adds a smiley to the parser
bbcode_create	Create a BBCode Resource
bbcode_destroy	Close BBCode_container resource
bbcode_parse	Parse a string following a given rule set
bbcode_set_arg_parser	Attach another parser in order to use another rule set for argument parsing
bbcode_set_flags	Set or alter parser options
bcadd	2个任意精度数字的加法计算
bccomp	比较两个任意精度的数字
bcdiv	2个任意精度的数字除法计算
bcmod	对一个任意精度数字取模
bcmul	2个任意精度数字乘法计算
bcompiler_load	从一个 bz 压缩过的文件中读取并创建类
bcompiler_load_exe	从一个 bcompiler exe 文件中读取并创建类
bcompiler_parse_class	读取一个类的字节码并回调一个用户的函数
bcompiler_read	从一个文件句柄中读取并创建类
bcompiler_write_class	写入定义过的类的字节码
bcompiler_write_constant	写入定义过的常量的字节码
bcompiler_write_exe_footer	写入开始位置以及 exe 类型文件的结尾信号
bcompiler_write_file	写入 PHP 源码文件的字节码
bcompiler_write_footer	写入单个字符 \x00 用于标识编译数据的结尾
bcompiler_write_function	以字节码写入定义过的函数
bcompiler_write_functions_from_file	以字节码写入一个文件中定义过的所以函数
bcompiler_write_header	写入 bcompiler 头
bcompiler_write_included_filename	写入一个包含的文件的字节码
bcpow	任意精度数字的成方
bcpowmod	Raise an arbitrary precision number to another, reduced by a specified modulus
bcscale	设置所有bc数学函数的默认小数点保留位数
bcsqrt	任意精度数字的二次方根
bcsub	2个任意精度数字的减法
bin2hex	函数把ASCII字符的字符串转换为十六进制值
bindec	二进制转换为十进制
bindtextdomain	Sets the path for a domain
bind_textdomain_codeset	Specify the character encoding in which the messages from the DOMAIN message catalog will be returned
blenc_encrypt	Encrypt a PHP script with BLENC.
boolval	Get the boolean value of a variable
bson_decode	反序列化一个 BSON 对象为 PHP 数组
bson_encode	序列化一个 PHP 变量为 BSON 字符串
bzclose	关闭一个 bzip2 文件
bzcompress	把一个字符串压缩成 bzip2 编码数据
bzdecompress	解压经 bzip2 编码过的数据
bzerrno	返回一个 bzip2 错误码
bzerror	返回包含 bzip2 错误号和错误字符串的一个 array
bzerrstr	返回一个 bzip2 的错误字符串
bzflush	强制写入所有写缓冲区的数据
bzopen	打开一个经 bzip2 压缩过的文件
bzread	bzip2 文件二进制安全地读取
bzwrite	二进制安全地写入 bzip2 文件

c

函数	说明
cairo_create	Returns a new CairoContext object on the requested surface.
cairo_font_face_get_type	Description
cairo_font_options_create	Description
cairo_font_options_equal	Description
cairo_font_options_get_antialias	Description
cairo_font_options_get_hint_metrics	Description
cairo_font_options_get_hint_style	Description
cairo_font_options_get_subpixel_order	Description
cairo_font_options_hash	Description
cairo_font_options_merge	Description
cairo_font_options_set_antialias	Description
cairo_font_options_set_hint_metrics	Description
cairo_font_options_set_hint_style	Description
cairo_font_options_set_subpixel_order	Description
cairo_font_options_status	Description
cairo_format_stride_for_width	Description
cairo_image_surface_create	Description
cairo_image_surface_create_for_data	Description
cairo_image_surface_create_from_png	Description
cairo_image_surface_get_data	Description
cairo_image_surface_get_format	Description
cairo_image_surface_get_height	Description
cairo_image_surface_get_stride	Description
cairo_image_surface_get_width	Description
cairo_matrix_invert	Description
cairo_matrix_multiply	Description
cairo_matrix_rotate	Description
cairo_matrix_transform_distance	Description
cairo_matrix_transform_point	Description
cairo_matrix_translate	Description
cairo_pattern_add_color_stop_rgb	Description
cairo_pattern_add_color_stop_rgba	Description
cairo_pattern_create_for_surface	Description
cairo_pattern_create_linear	Description
cairo_pattern_create_radial	Description
cairo_pattern_create_rgb	Description
cairo_pattern_create_rgba	Description
cairo_pattern_get_color_stop_count	Description
cairo_pattern_get_color_stop_rgba	Description
cairo_pattern_get_extend	Description
cairo_pattern_get_filter	Description
cairo_pattern_get_linear_points	Description
cairo_pattern_get_matrix	Description
cairo_pattern_get_radial_circles	Description
cairo_pattern_get_rgba	Description
cairo_pattern_get_surface	Description
cairo_pattern_get_type	Description
cairo_pattern_set_extend	Description
cairo_pattern_set_filter	Description
cairo_pattern_set_matrix	Description
cairo_pattern_status	Description
cairo_pdf_surface_create	Description
cairo_pdf_surface_set_size	Description
cairo_ps_get_levels	Description
cairo_ps_level_to_string	Description
cairo_ps_surface_create	Description
cairo_ps_surface_dsc_begin_page_setup	Description
cairo_ps_surface_dsc_begin_setup	Description
cairo_ps_surface_dsc_comment	Description
cairo_ps_surface_get_eps	Description
cairo_ps_surface_restrict_to_level	Description
cairo_ps_surface_set_eps	Description
cairo_ps_surface_set_size	Description
cairo_scaled_font_create	Description
cairo_scaled_font_extents	Description
cairo_scaled_font_get_ctm	Description
cairo_scaled_font_get_font_face	Description
cairo_scaled_font_get_font_matrix	Description
cairo_scaled_font_get_font_options	Description
cairo_scaled_font_get_scale_matrix	Description
cairo_scaled_font_get_type	Description
cairo_scaled_font_glyph_extents	Description
cairo_scaled_font_status	Description
cairo_scaled_font_text_extents	Description
cairo_surface_copy_page	Description
cairo_surface_create_similar	Description
cairo_surface_finish	Description
cairo_surface_flush	Description
cairo_surface_get_content	Description
cairo_surface_get_device_offset	Description
cairo_surface_get_font_options	Description
cairo_surface_get_type	Description
cairo_surface_mark_dirty	Description
cairo_surface_mark_dirty_rectangle	Description
cairo_surface_set_device_offset	Description
cairo_surface_set_fallback_resolution	Description
cairo_surface_show_page	Description
cairo_surface_status	Description
cairo_surface_write_to_png	Description
cairo_svg_surface_create	Description
cairo_svg_surface_restrict_to_version	Description
cairo_svg_version_to_string	Description
calculhmac	Obtain a hmac key (needs 2 arguments)
calcul_hmac	Obtain a hmac key (needs 8 arguments)
call_user_func	把第一个参数作为回调函数调用
call_user_func_array	调用回调函数，并把一个数组参数作为回调函数的参数
call_user_method	对特定对象调用用户方法（已废弃）
call_user_method_array	调用一个用户方法，同时传递参数数组（已废弃）
cal_days_in_month	返回某个历法中某年中某月的天数
cal_from_jd	转换Julian Day计数到一个支持的历法。
cal_info	返回选定历法的信息
cal_to_jd	从一个支持的历法转变为Julian Day计数。
ceil	进一法取整
chdb_create	Creates a chdb file
chdir	改变目录
checkdate	验证一个格里高里日期
checkdnsrr	给指定的主机（域名）或者IP地址做DNS通信检查
chgrp	改变文件所属的组
chmod	改变文件模式
chop	rtrim 的别名
chown	改变文件的所有者
chr	返回指定的字符
chroot	改变根目录
chunk_split	将字符串分割成小块
classkit_import	Import new class method definitions from a file
classkit_method_add	Dynamically adds a new method to a given class
classkit_method_copy	Copies a method from class to another
classkit_method_redefine	Dynamically changes the code of the given method
classkit_method_remove	Dynamically removes the given method
classkit_method_rename	Dynamically changes the name of the given method
class_alias	为一个类创建别名
class_exists	检查类是否已定义
class_implements	返回指定的类实现的所有接口。
class_parents	返回指定类的父类。
class_uses	Return the traits used by the given class
clearstatcache	清除文件状态缓存
cli_get_process_title	Returns the current process title
cli_set_process_title	Sets the process title
closedir	关闭目录句柄
closelog	关闭系统日志链接
compact	建立一个数组，包括变量名和它们的值
com_create_guid	Generate a globally unique identifier (GUID)
com_event_sink	Connect events from a COM object to a PHP object
com_get_active_object	Returns a handle to an already running instance of a COM object
com_load_typelib	装载一个 Typelib
com_message_pump	Process COM messages, sleeping for up to timeoutms milliseconds
com_print_typeinfo	Print out a PHP class definition for a dispatchable interface
connection_aborted	检查客户端是否已经断开
connection_status	返回连接的状态位
constant	返回一个常量的值
Constants for PDO_4D	Constants for PDO_4D
Context 参数	Context 参数列表
convert_cyr_string	将字符由一种 Cyrillic 字符转换成另一种
convert_uudecode	解码一个 uuencode 编码的字符串
convert_uuencode	使用 uuencode 编码一个字符串
copy	拷贝文件
cos	余弦
cosh	双曲余弦
count	计算数组中的单元数目或对象中的属性个数
counter_bump	修改简单计数器的当前值。
counter_bump_value	更新计数器资源的当前值。
counter_create	创建一个包含单个数值的计数器。
counter_get	获取简单计数器的当前值。
counter_get_meta	返回计数器资源的部分元信息。
counter_get_named	按名称查询一个已存在的计数器，并作为资源返回。
counter_get_value	获取计数器资源的当前值。
counter_reset	重置简单计数器的当前值。
counter_reset_value	重置计数器资源的当前值。
count_chars	返回字符串所用字符的信息
crack_check	Performs an obscure check with the given password
crack_closedict	Closes an open CrackLib dictionary
crack_getlastmessage	Returns the message from the last obscure check
crack_opendict	Opens a new CrackLib dictionary
crc32	计算一个字符串的 crc32 多项式
create_function	Create an anonymous (lambda-style) function
crypt	单向字符串散列
ctype_alnum	做字母和数字字符检测
ctype_alpha	做纯字符检测
ctype_cntrl	做控制字符检测
ctype_digit	做纯数字检测
ctype_graph	做可打印字符串检测，空格除外
ctype_lower	做小写字符检测
ctype_print	做可打印字符检测
ctype_punct	检测可打印的字符是不是不包含空白、数字和字母
ctype_space	做空白字符检测
ctype_upper	做大写字母检测
ctype_xdigit	检测字符串是否只包含十六进制字符
cubrid_affected_rows	Return the number of rows affected by the last SQL statement
cubrid_bind	Bind variables to a prepared statement as parameters
cubrid_client_encoding	Return the current CUBRID connection charset
cubrid_close	Close CUBRID connection
cubrid_close_prepare	Close the request handle
cubrid_close_request	Close the request handle
cubrid_column_names	Get the column names in result
cubrid_column_types	Get column types in result
cubrid_col_get	Get contents of collection type column using OID
cubrid_col_size	Get the number of elements in collection type column using OID
cubrid_commit	Commit a transaction
cubrid_connect	Open a connection to a CUBRID Server
cubrid_connect_with_url	Establish the environment for connecting to CUBRID server
cubrid_current_oid	Get OID of the current cursor location
cubrid_data_seek	Move the internal row pointer of the CUBRID result
cubrid_db_name	Get db name from results of cubrid_list_dbs
cubrid_disconnect	Close a database connection
cubrid_drop	Delete an instance using OID
cubrid_errno	Return the numerical value of the error message from previous CUBRID operation
cubrid_error	Get the error message
cubrid_error_code	Get error code for the most recent function call
cubrid_error_code_facility	Get the facility code of error
cubrid_error_msg	Get last error message for the most recent function call
cubrid_execute	Execute a prepared SQL statement
cubrid_fetch	Fetch the next row from a result set
cubrid_fetch_array	Fetch a result row as an associative array, a numeric array, or both
cubrid_fetch_assoc	Return the associative array that corresponds to the fetched row
cubrid_fetch_field	Get column information from a result and return as an object
cubrid_fetch_lengths	Return an array with the lengths of the values of each field from the current row
cubrid_fetch_object	Fetche the next row and returns it as an object
cubrid_fetch_row	Return a numerical array with the values of the current row
cubrid_field_flags	Return a string with the flags of the given field offset
cubrid_field_len	Get the maximum length of the specified field
cubrid_field_name	Return the name of the specified field index
cubrid_field_seek	Move the result set cursor to the specified field offset
cubrid_field_table	Return the name of the table of the specified field
cubrid_field_type	Return the type of the column corresponding to the given field offset
cubrid_free_result	Free the memory occupied by the result data
cubrid_get	Get a column using OID
cubrid_get_autocommit	Get auto-commit mode of the connection
cubrid_get_charset	Return the current CUBRID connection charset
cubrid_get_class_name	Get the class name using OID
cubrid_get_client_info	Return the client library version
cubrid_get_db_parameter	Returns the CUBRID database parameters
cubrid_get_query_timeout	Get the query timeout value of the request
cubrid_get_server_info	Return the CUBRID server version
cubrid_insert_id	Return the ID generated for the last updated AUTO_INCREMENT column
cubrid_is_instance	Check whether the instance pointed by OID exists
cubrid_list_dbs	Return an array with the list of all existing CUBRID databases
cubrid_load_from_glo	Read data from a GLO instance and save it in a file
cubrid_lob2_bind	Bind a lob object or a string as a lob object to a prepared statement as parameters.
cubrid_lob2_close	Close LOB object.
cubrid_lob2_export	Export the lob object to a file.
cubrid_lob2_import	Import BLOB/CLOB data from a file.
cubrid_lob2_new	Create a lob object.
cubrid_lob2_read	Read from BLOB/CLOB data.
cubrid_lob2_seek	Move the cursor of a lob object.
cubrid_lob2_seek64	Move the cursor of a lob object.
cubrid_lob2_size	Get a lob object’s size.
cubrid_lob2_size64	Get a lob object’s size.
cubrid_lob2_tell	Tell the cursor position of the LOB object.
cubrid_lob2_tell64	Tell the cursor position of the LOB object.
cubrid_lob2_write	Write to a lob object.
cubrid_lob_close	Close BLOB/CLOB data
cubrid_lob_export	Export BLOB/CLOB data to file
cubrid_lob_get	Get BLOB/CLOB data
cubrid_lob_send	Read BLOB/CLOB data and send straight to browser
cubrid_lob_size	Get BLOB/CLOB data size
cubrid_lock_read	Set a read lock on the given OID
cubrid_lock_write	Set a write lock on the given OID
cubrid_move_cursor	Move the cursor in the result
cubrid_new_glo	Create a glo instance
cubrid_next_result	Get result of next query when executing multiple SQL statements
cubrid_num_cols	Return the number of columns in the result set
cubrid_num_fields	Return the number of columns in the result set
cubrid_num_rows	Get the number of rows in the result set
cubrid_pconnect	Open a persistent connection to a CUBRID server
cubrid_pconnect_with_url	Open a persistent connection to CUBRID server
cubrid_ping	Ping a server connection or reconnect if there is no connection
cubrid_prepare	Prepare a SQL statement for execution
cubrid_put	Update a column using OID
cubrid_query	Send a CUBRID query
cubrid_real_escape_string	Escape special characters in a string for use in an SQL statement
cubrid_result	Return the value of a specific field in a specific row
cubrid_rollback	Roll back a transaction
cubrid_save_to_glo	Save requested file in a GLO instance
cubrid_schema	Get the requested schema information
cubrid_send_glo	Read data from glo and send it to std output
cubrid_seq_drop	Delete an element from sequence type column using OID
cubrid_seq_insert	Insert an element to a sequence type column using OID
cubrid_seq_put	Update the element value of sequence type column using OID
cubrid_set_add	Insert a single element to set type column using OID
cubrid_set_autocommit	Set autocommit mode of the connection
cubrid_set_db_parameter	Sets the CUBRID database parameters
cubrid_set_drop	Delete an element from set type column using OID
cubrid_set_query_timeout	Set the timeout time of query execution
cubrid_unbuffered_query	Perform a query without fetching the results into memory
cubrid_version	Get the CUBRID PHP module’s version
CURL context options	CURL 上下文选项列表
curl_close	关闭一个cURL会话
curl_copy_handle	复制一个cURL句柄和它的所有选项
curl_errno	返回最后一次的错误号
curl_error	返回一个保护当前会话最近一次错误的字符串
curl_escape	使用 URL 编码给定的字符串
curl_exec	执行一个cURL会话
curl_file_create	创建一个 CURLFile 对象
curl_getinfo	获取一个cURL连接资源句柄的信息
curl_init	初始化一个cURL会话
curl_multi_add_handle	向curl批处理会话中添加单独的curl句柄
curl_multi_close	关闭一组cURL句柄
curl_multi_exec	运行当前 cURL 句柄的子连接
curl_multi_getcontent	如果设置了CURLOPT_RETURNTRANSFER，则返回获取的输出的文本流
curl_multi_info_read	获取当前解析的cURL的相关传输信息
curl_multi_init	返回一个新cURL批处理句柄
curl_multi_remove_handle	移除curl批处理句柄资源中的某个句柄资源
curl_multi_select	等待所有cURL批处理中的活动连接
curl_multi_setopt	为 cURL 并行处理设置一个选项
curl_multi_strerror	Return string describing error code
curl_pause	Pause and unpause a connection
curl_reset	Reset all options of a libcurl session handle
curl_setopt	设置一个cURL传输选项
curl_setopt_array	为cURL传输会话批量设置选项
curl_share_close	Close a cURL share handle
curl_share_init	Initialize a cURL share handle
curl_share_setopt	Set an option for a cURL share handle.
curl_strerror	Return string describing the given error code
curl_unescape	解码给定的 URL 编码的字符串
curl_version	获取cURL版本信息
current	返回数组中的当前单元
cyrus_authenticate	Authenticate against a Cyrus IMAP server
cyrus_bind	Bind callbacks to a Cyrus IMAP connection
cyrus_close	Close connection to a Cyrus IMAP server
cyrus_connect	Connect to a Cyrus IMAP server
cyrus_query	Send a query to a Cyrus IMAP server
cyrus_unbind	Unbind …

d

函数	说明
date	格式化一个本地时间／日期
date_default_timezone_get	取得一个脚本中所有日期时间函数所使用的默认时区
date_default_timezone_set	设定用于一个脚本中所有日期时间函数的默认时区
date_parse	Returns associative array with detailed info about given date
date_parse_from_format	Get info about given date formatted according to the specified format
date_sunrise	返回给定的日期与地点的日出时间
date_sunset	返回给定的日期与地点的日落时间
date_sun_info	Returns an array with information about sunset/sunrise and twilight begin/end
db2_autocommit	Returns or sets the AUTOCOMMIT state for a database connection
db2_bind_param	Binds a PHP variable to an SQL statement parameter
db2_client_info	Returns an object with properties that describe the DB2 database client
db2_close	Closes a database connection
db2_columns	Returns a result set listing the columns and associated metadata for a table
db2_column_privileges	Returns a result set listing the columns and associated privileges for a table
db2_commit	Commits a transaction
db2_connect	Returns a connection to a database
db2_conn_error	Returns a string containing the SQLSTATE returned by the last connection attempt
db2_conn_errormsg	Returns the last connection error message and SQLCODE value
db2_cursor_type	Returns the cursor type used by a statement resource
db2_escape_string	Used to escape certain characters
db2_exec	Executes an SQL statement directly
db2_execute	Executes a prepared SQL statement
db2_fetch_array	Returns an array, indexed by column position, representing a row in a result set
db2_fetch_assoc	Returns an array, indexed by column name, representing a row in a result set
db2_fetch_both	Returns an array, indexed by both column name and position, representing a row in a result set
db2_fetch_object	Returns an object with properties representing columns in the fetched row
db2_fetch_row	Sets the result set pointer to the next row or requested row
db2_field_display_size	Returns the maximum number of bytes required to display a column
db2_field_name	Returns the name of the column in the result set
db2_field_num	Returns the position of the named column in a result set
db2_field_precision	Returns the precision of the indicated column in a result set
db2_field_scale	Returns the scale of the indicated column in a result set
db2_field_type	Returns the data type of the indicated column in a result set
db2_field_width	Returns the width of the current value of the indicated column in a result set
db2_foreign_keys	Returns a result set listing the foreign keys for a table
db2_free_result	Frees resources associated with a result set
db2_free_stmt	Frees resources associated with the indicated statement resource
db2_get_option	Retrieves an option value for a statement resource or a connection resource
db2_last_insert_id	Returns the auto generated ID of the last insert query that successfully executed on this connection
db2_lob_read	Gets a user defined size of LOB files with each invocation
db2_next_result	Requests the next result set from a stored procedure
db2_num_fields	Returns the number of fields contained in a result set
db2_num_rows	Returns the number of rows affected by an SQL statement
db2_pclose	Closes a persistent database connection
db2_pconnect	Returns a persistent connection to a database
db2_prepare	Prepares an SQL statement to be executed
db2_primary_keys	Returns a result set listing primary keys for a table
db2_procedures	Returns a result set listing the stored procedures registered in a database
db2_procedure_columns	Returns a result set listing stored procedure parameters
db2_result	Returns a single column from a row in the result set
db2_rollback	Rolls back a transaction
db2_server_info	Returns an object with properties that describe the DB2 database server
db2_set_option	Set options for connection or statement resources
db2_special_columns	Returns a result set listing the unique row identifier columns for a table
db2_statistics	Returns a result set listing the index and statistics for a table
db2_stmt_error	Returns a string containing the SQLSTATE returned by an SQL statement
db2_stmt_errormsg	Returns a string containing the last SQL statement error message
db2_tables	Returns a result set listing the tables and associated metadata in a database
db2_table_privileges	Returns a result set listing the tables and associated privileges in a database
dbase_add_record	Adds a record to a database
dbase_close	Closes a database
dbase_create	Creates a database
dbase_delete_record	Deletes a record from a database
dbase_get_header_info	Gets the header info of a database
dbase_get_record	Gets a record from a database as an indexed array
dbase_get_record_with_names	Gets a record from a database as an associative array
dbase_numfields	Gets the number of fields of a database
dbase_numrecords	Gets the number of records in a database
dbase_open	Opens a database
dbase_pack	Packs a database
dbase_replace_record	Replaces a record in a database
dba_close	Close a DBA database
dba_delete	Delete DBA entry specified by key
dba_exists	Check whether key exists
dba_fetch	Fetch data specified by key
dba_firstkey	Fetch first key
dba_handlers	List all the handlers available
dba_insert	Insert entry
dba_key_split	Splits a key in string representation into array representation
dba_list	List all open database files
dba_nextkey	Fetch next key
dba_open	Open database
dba_optimize	Optimize database
dba_popen	Open database persistently
dba_replace	Replace or insert entry
dba_sync	Synchronize database
dbplus_add	Add a tuple to a relation
dbplus_aql	Perform AQL query
dbplus_chdir	Get/Set database virtual current directory
dbplus_close	Close a relation
dbplus_curr	Get current tuple from relation
dbplus_errcode	Get error string for given errorcode or last error
dbplus_errno	Get error code for last operation
dbplus_find	Set a constraint on a relation
dbplus_first	Get first tuple from relation
dbplus_flush	Flush all changes made on a relation
dbplus_freealllocks	Free all locks held by this client
dbplus_freelock	Release write lock on tuple
dbplus_freerlocks	Free all tuple locks on given relation
dbplus_getlock	Get a write lock on a tuple
dbplus_getunique	Get an id number unique to a relation
dbplus_info	Get information about a relation
dbplus_last	Get last tuple from relation
dbplus_lockrel	Request write lock on relation
dbplus_next	Get next tuple from relation
dbplus_open	Open relation file
dbplus_prev	Get previous tuple from relation
dbplus_rchperm	Change relation permissions
dbplus_rcreate	Creates a new DB++ relation
dbplus_rcrtexact	Creates an exact but empty copy of a relation including indices
dbplus_rcrtlike	Creates an empty copy of a relation with default indices
dbplus_resolve	Resolve host information for relation
dbplus_restorepos	Restore position
dbplus_rkeys	Specify new primary key for a relation
dbplus_ropen	Open relation file local
dbplus_rquery	Perform local (raw) AQL query
dbplus_rrename	Rename a relation
dbplus_rsecindex	Create a new secondary index for a relation
dbplus_runlink	Remove relation from filesystem
dbplus_rzap	Remove all tuples from relation
dbplus_savepos	Save position
dbplus_setindex	Set index
dbplus_setindexbynumber	Set index by number
dbplus_sql	Perform SQL query
dbplus_tcl	Execute TCL code on server side
dbplus_tremove	Remove tuple and return new current tuple
dbplus_undo	Undo
dbplus_undoprepare	Prepare undo
dbplus_unlockrel	Give up write lock on relation
dbplus_unselect	Remove a constraint from relation
dbplus_update	Update specified tuple in relation
dbplus_xlockrel	Request exclusive lock on relation
dbplus_xunlockrel	Free exclusive lock on relation
dbx_close	Close an open connection/database
dbx_compare	Compare two rows for sorting purposes
dbx_connect	Open a connection/database
dbx_error	Report the error message of the latest function call in the module
dbx_escape_string	Escape a string so it can safely be used in an sql-statement
dbx_fetch_row	Fetches rows from a query-result that had the DBX_RESULT_UNBUFFERED flag set
dbx_query	Send a query and fetch all results (if any)
dbx_sort	Sort a result from a dbx_query by a custom sort function
dcgettext	Overrides the domain for a single lookup
dcngettext	Plural version of dcgettext
debug_backtrace	产生一条回溯跟踪(backtrace)
debug_print_backtrace	打印一条回溯。
debug_zval_dump	Dumps a string representation of an internal zend value to output
decbin	十进制转换为二进制
dechex	十进制转换为十六进制
decoct	十进制转换为八进制
define	定义一个常量
defined	检查某个名称的常量是否存在
define_syslog_variables	Initializes all syslog related variables
deg2rad	将角度转换为弧度
delete	参见 unlink 或 unset
dgettext	Override the current domain
die	等同于 exit
dio_close	Closes the file descriptor given by fd
dio_fcntl	Performs a c library fcntl on fd
dio_open	Opens a file (creating it if necessary) at a lower level than the C library input/ouput stream functions allow.
dio_read	Reads bytes from a file descriptor
dio_seek	Seeks to pos on fd from whence
dio_stat	Gets stat information about the file descriptor fd
dio_tcsetattr	Sets terminal attributes and baud rate for a serial port
dio_truncate	Truncates file descriptor fd to offset bytes
dio_write	Writes data to fd with optional truncation at length
dir	返回一个 Directory 类实例
dirname	返回路径中的目录部分
diskfreespace	disk_free_space 的别名
disk_free_space	返回目录中的可用空间
disk_total_space	返回一个目录的磁盘总大小
dl	运行时载入一个 PHP 扩展
dngettext	Plural version of dgettext
dns_check_record	别名 checkdnsrr
dns_get_mx	别名 getmxrr
dns_get_record	获取指定主机的DNS记录
dom_import_simplexml	Gets a DOMElement object from a SimpleXMLElement object
doubleval	floatval 的别名

e

函数	说明
each	返回数组中当前的键／值对并将数组指针向前移动一步
easter_date	得到指定年份的复活节午夜时的Unix时间戳。
easter_days	得到指定年份的3月21日到复活节之间的天数
echo	输出一个或多个字符串
eio_busy	Artificially increase load. Could be useful in tests, benchmarking.
eio_cancel	Cancels a request
eio_chmod	Change file/direcrory permissions.
eio_chown	Change file/direcrory permissions.
eio_close	Close file
eio_custom	Execute custom request like any other eio_* call.
eio_dup2	Duplicate a file descriptor
eio_event_loop	Polls libeio until all requests proceeded
eio_fallocate	Allows the caller to directly manipulate the allocated disk space for a file
eio_fchmod	Change file permissions.
eio_fchown	Change file ownership
eio_fdatasync	Synchronize a file’s in-core state with storage device.
eio_fstat	Get file status
eio_fstatvfs	Get file system statistics
eio_fsync	Synchronize a file’s in-core state with storage device
eio_ftruncate	Truncate a file
eio_futime	Change file last access and modification times
eio_get_event_stream	Get stream representing a variable used in internal communications with libeio.
eio_get_last_error	Returns string describing the last error associated with a request resource
eio_grp	Createsa request group.
eio_grp_add	Adds a request to the request group.
eio_grp_cancel	Cancels a request group
eio_grp_limit	Set group limit
eio_init	(Re-)initialize Eio
eio_link	Create a hardlink for file
eio_lstat	Get file status
eio_mkdir	Create directory
eio_mknod	Create a special or ordinary file.
eio_nop	Does nothing, except go through the whole request cycle.
eio_npending	Returns number of finished, but unhandled requests
eio_nready	Returns number of not-yet handled requests
eio_nreqs	Returns number of requests to be processed
eio_nthreads	Returns number of threads currently in use
eio_open	Opens a file
eio_poll	Can be to be called whenever there are pending requests that need finishing.
eio_read	Read from a file descriptor at given offset.
eio_readahead	Perform file readahead into page cache
eio_readdir	Reads through a whole directory
eio_readlink	Read value of a symbolic link.
eio_realpath	Get the canonicalized absolute pathname.
eio_rename	Change the name or location of a file.
eio_rmdir	Remove a directory
eio_seek	Repositions the offset of the open file associated with the fd argument to the argument offset according to the directive whence
eio_sendfile	Transfer data between file descriptors
eio_set_max_idle	Set maximum number of idle threads.
eio_set_max_parallel	Set maximum parallel threads
eio_set_max_poll_reqs	Set maximum number of requests processed in a poll.
eio_set_max_poll_time	Set maximum poll time
eio_set_min_parallel	Set minimum parallel thread number
eio_stat	Get file status
eio_statvfs	Get file system statistics
eio_symlink	Create a symbolic link
eio_sync	Commit buffer cache to disk
eio_syncfs	Calls Linux’ syncfs syscall, if available
eio_sync_file_range	Sync a file segment with disk
eio_truncate	Truncate a file
eio_unlink	Delete a name and possibly the file it refers to
eio_utime	Change file last access and modification times.
eio_write	Write to file
empty	检查一个变量是否为空
enchant_broker_describe	Enumerates the Enchant providers
enchant_broker_dict_exists	Whether a dictionary exists or not. Using non-empty tag
enchant_broker_free	Free the broker resource and its dictionnaries
enchant_broker_free_dict	Free a dictionary resource
enchant_broker_get_dict_path	Get the directory path for a given backend
enchant_broker_get_error	Returns the last error of the broker
enchant_broker_init	create a new broker object capable of requesting
enchant_broker_list_dicts	Returns a list of available dictionaries
enchant_broker_request_dict	create a new dictionary using a tag
enchant_broker_request_pwl_dict	creates a dictionary using a PWL file
enchant_broker_set_dict_path	Set the directory path for a given backend
enchant_broker_set_ordering	Declares a preference of dictionaries to use for the language
enchant_dict_add_to_personal	add a word to personal word list
enchant_dict_add_to_session	add ‘word’ to this spell-checking session
enchant_dict_check	Check whether a word is correctly spelled or not
enchant_dict_describe	Describes an individual dictionary
enchant_dict_get_error	Returns the last error of the current spelling-session
enchant_dict_is_in_session	whether or not ‘word’ exists in this spelling-session
enchant_dict_quick_check	Check the word is correctly spelled and provide suggestions
enchant_dict_store_replacement	Add a correction for a word
enchant_dict_suggest	Will return a list of values if any of those pre-conditions are not met
end	将数组的内部指针指向最后一个单元
ereg	正则表达式匹配
eregi	不区分大小写的正则表达式匹配
eregi_replace	不区分大小写的正则表达式替换
ereg_replace	正则表达式替换
error_clear_last	Clear the most recent error
error_get_last	获取最后发生的错误
error_log	发送错误信息到某个地方
error_reporting	设置应该报告何种 PHP 错误
escapeshellarg	把字符串转码为可以在 shell 命令里使用的参数
escapeshellcmd	shell 元字符转义
eval	把字符串作为PHP代码执行
event_base_free	Destroy event base
event_base_loop	Handle events
event_base_loopbreak	Abort event loop
event_base_loopexit	Exit loop after a time
event_base_new	Create and initialize new event base
event_base_priority_init	Set the number of event priority levels
event_base_reinit	Reinitialize the event base after a fork
event_base_set	Associate event base with an event
event_buffer_base_set	Associate buffered event with an event base
event_buffer_disable	Disable a buffered event
event_buffer_enable	Enable a buffered event
event_buffer_fd_set	Change a buffered event file descriptor
event_buffer_free	Destroy buffered event
event_buffer_new	Create new buffered event
event_buffer_priority_set	Assign a priority to a buffered event
event_buffer_read	Read data from a buffered event
event_buffer_set_callback	Set or reset callbacks for a buffered event
event_buffer_timeout_set	Set read and write timeouts for a buffered event
event_buffer_watermark_set	Set the watermarks for read and write events
event_buffer_write	Write data to a buffered event
event_new	Create new event
event_priority_set	Assign a priority to an event.
event_timer_add	别名 event_add
event_timer_del	别名 event_del
event_timer_new	别名 event_new
event_timer_set	Prepare a timer event
Examples with PDO_4D	Examples PDO_4D
exec	执行一个外部程序
exif_imagetype	判断一个图像的类型
exif_read_data	从 JPEG 或 TIFF 文件中读取 EXIF 头信息
exif_tagname	获取指定索引的头名称
exif_thumbnail	取得嵌入在 TIFF 或 JPEG 图像中的缩略图
exit	输出一个消息并且退出当前脚本
exp	计算 e 的指数
expect_expectl	Waits until the output from a process matches one of the patterns, a specified time period has passed, or an EOF is seen
expect_popen	Execute command via Bourne shell, and open the PTY stream to the process
explode	使用一个字符串分割另一个字符串
expm1	返回 exp(number)
extension_loaded	检查一个扩展是否已经加载
extract	从数组中将变量导入到当前的符号表
ezmlm_hash	计算 EZMLM 所需的散列值

f

函数	说明
fam_cancel_monitor	Terminate monitoring
fam_close	Close FAM connection
fam_monitor_collection	Monitor a collection of files in a directory for changes
fam_monitor_directory	Monitor a directory for changes
fam_monitor_file	Monitor a regular file for changes
fam_next_event	Get next pending FAM event
fam_open	Open connection to FAM daemon
fam_pending	Check for pending FAM events
fam_resume_monitor	Resume suspended monitoring
fam_suspend_monitor	Temporarily suspend monitoring
fann_cascadetrain_on_data	Trains on an entire dataset, for a period of time using the Cascade2 training algorithm
fann_cascadetrain_on_file	Trains on an entire dataset read from file, for a period of time using the Cascade2 training algorithm.
fann_clear_scaling_params	Clears scaling parameters
fann_copy	Creates a copy of a fann structure
fann_create_from_file	Constructs a backpropagation neural network from a configuration file
fann_create_shortcut	Creates a standard backpropagation neural network which is not fully connectected and has shortcut connections
fann_create_shortcut_array	Creates a standard backpropagation neural network which is not fully connectected and has shortcut connections
fann_create_sparse	Creates a standard backpropagation neural network, which is not fully connected
fann_create_sparse_array	Creates a standard backpropagation neural network, which is not fully connected using an array of layer sizes
fann_create_standard	Creates a standard fully connected backpropagation neural network
fann_create_standard_array	Creates a standard fully connected backpropagation neural network using an array of layer sizes
fann_create_train	Creates an empty training data struct
fann_create_train_from_callback	Creates the training data struct from a user supplied function
fann_descale_input	Scale data in input vector after get it from ann based on previously calculated parameters
fann_descale_output	Scale data in output vector after get it from ann based on previously calculated parameters
fann_descale_train	Descale input and output data based on previously calculated parameters
fann_destroy	Destroys the entire network and properly freeing all the associated memory
fann_destroy_train	Destructs the training data
fann_duplicate_train_data	Returns an exact copy of a fann train data
fann_get_activation_function	Returns the activation function
fann_get_activation_steepness	Returns the activation steepness for supplied neuron and layer number
fann_get_bias_array	Get the number of bias in each layer in the network
fann_get_bit_fail	The number of fail bits
fann_get_bit_fail_limit	Returns the bit fail limit used during training
fann_get_cascade_activation_functions	Returns the cascade activation functions
fann_get_cascade_activation_functions_count	Returns the number of cascade activation functions
fann_get_cascade_activation_steepnesses	Returns the cascade activation steepnesses
fann_get_cascade_activation_steepnesses_count	The number of activation steepnesses
fann_get_cascade_candidate_change_fraction	Returns the cascade candidate change fraction
fann_get_cascade_candidate_limit	Return the candidate limit
fann_get_cascade_candidate_stagnation_epochs	Returns the number of cascade candidate stagnation epochs
fann_get_cascade_max_cand_epochs	Returns the maximum candidate epochs
fann_get_cascade_max_out_epochs	Returns the maximum out epochs
fann_get_cascade_min_cand_epochs	Returns the minimum candidate epochs
fann_get_cascade_min_out_epochs	Returns the minimum out epochs
fann_get_cascade_num_candidates	Returns the number of candidates used during training
fann_get_cascade_num_candidate_groups	Returns the number of candidate groups
fann_get_cascade_output_change_fraction	Returns the cascade output change fraction
fann_get_cascade_output_stagnation_epochs	Returns the number of cascade output stagnation epochs
fann_get_cascade_weight_multiplier	Returns the weight multiplier
fann_get_connection_array	Get connections in the network
fann_get_connection_rate	Get the connection rate used when the network was created
fann_get_errno	Returns the last error number
fann_get_errstr	Returns the last errstr
fann_get_layer_array	Get the number of neurons in each layer in the network
fann_get_learning_momentum	Returns the learning momentum
fann_get_learning_rate	Returns the learning rate
fann_get_MSE	Reads the mean square error from the network
fann_get_network_type	Get the type of neural network it was created as
fann_get_num_input	Get the number of input neurons
fann_get_num_layers	Get the number of layers in the neural network
fann_get_num_output	Get the number of output neurons
fann_get_quickprop_decay	Returns the decay which is a factor that weights should decrease in each iteration during quickprop training
fann_get_quickprop_mu	Returns the mu factor
fann_get_rprop_decrease_factor	Returns the increase factor used during RPROP training
fann_get_rprop_delta_max	Returns the maximum step-size
fann_get_rprop_delta_min	Returns the minimum step-size
fann_get_rprop_delta_zero	Returns the initial step-size
fann_get_rprop_increase_factor	Returns the increase factor used during RPROP training
fann_get_sarprop_step_error_shift	Returns the sarprop step error shift
fann_get_sarprop_step_error_threshold_factor	Returns the sarprop step error threshold factor
fann_get_sarprop_temperature	Returns the sarprop temperature
fann_get_sarprop_weight_decay_shift	Returns the sarprop weight decay shift
fann_get_total_connections	Get the total number of connections in the entire network
fann_get_total_neurons	Get the total number of neurons in the entire network
fann_get_training_algorithm	Returns the training algorithm
fann_get_train_error_function	Returns the error function used during training
fann_get_train_stop_function	Returns the stop function used during training
fann_init_weights	Initialize the weights using Widrow + Nguyen’s algorithm
fann_length_train_data	Returns the number of training patterns in the train data
fann_merge_train_data	Merges the train data
fann_num_input_train_data	Returns the number of inputs in each of the training patterns in the train data
fann_num_output_train_data	Returns the number of outputs in each of the training patterns in the train data
fann_print_error	Prints the error string
fann_randomize_weights	Give each connection a random weight between min_weight and max_weight
fann_read_train_from_file	Reads a file that stores training data
fann_reset_errno	Resets the last error number
fann_reset_errstr	Resets the last error string
fann_reset_MSE	Resets the mean square error from the network
fann_run	Will run input through the neural network
fann_save	Saves the entire network to a configuration file
fann_save_train	Save the training structure to a file
fann_scale_input	Scale data in input vector before feed it to ann based on previously calculated parameters
fann_scale_input_train_data	Scales the inputs in the training data to the specified range
fann_scale_output	Scale data in output vector before feed it to ann based on previously calculated parameters
fann_scale_output_train_data	Scales the outputs in the training data to the specified range
fann_scale_train	Scale input and output data based on previously calculated parameters
fann_scale_train_data	Scales the inputs and outputs in the training data to the specified range
fann_set_activation_function	Sets the activation function for supplied neuron and layer
fann_set_activation_function_hidden	Sets the activation function for all of the hidden layers
fann_set_activation_function_layer	Sets the activation function for all the neurons in the supplied layer.
fann_set_activation_function_output	Sets the activation function for the output layer
fann_set_activation_steepness	Sets the activation steepness for supplied neuron and layer number
fann_set_activation_steepness_hidden	Sets the steepness of the activation steepness for all neurons in the all hidden layers
fann_set_activation_steepness_layer	Sets the activation steepness for all of the neurons in the supplied layer number
fann_set_activation_steepness_output	Sets the steepness of the activation steepness in the output layer
fann_set_bit_fail_limit	Set the bit fail limit used during training
fann_set_callback	Sets the callback function for use during training
fann_set_cascade_activation_functions	Sets the array of cascade candidate activation functions
fann_set_cascade_activation_steepnesses	Sets the array of cascade candidate activation steepnesses
fann_set_cascade_candidate_change_fraction	Sets the cascade candidate change fraction
fann_set_cascade_candidate_limit	Sets the candidate limit
fann_set_cascade_candidate_stagnation_epochs	Sets the number of cascade candidate stagnation epochs
fann_set_cascade_max_cand_epochs	Sets the max candidate epochs
fann_set_cascade_max_out_epochs	Sets the maximum out epochs
fann_set_cascade_min_cand_epochs	Sets the min candidate epochs
fann_set_cascade_min_out_epochs	Sets the minimum out epochs
fann_set_cascade_num_candidate_groups	Sets the number of candidate groups
fann_set_cascade_output_change_fraction	Sets the cascade output change fraction
fann_set_cascade_output_stagnation_epochs	Sets the number of cascade output stagnation epochs
fann_set_cascade_weight_multiplier	Sets the weight multiplier
fann_set_error_log	Sets where the errors are logged to
fann_set_input_scaling_params	Calculate input scaling parameters for future use based on training data
fann_set_learning_momentum	Sets the learning momentum
fann_set_learning_rate	Sets the learning rate
fann_set_output_scaling_params	Calculate output scaling parameters for future use based on training data
fann_set_quickprop_decay	Sets the quickprop decay factor
fann_set_quickprop_mu	Sets the quickprop mu factor
fann_set_rprop_decrease_factor	Sets the decrease factor used during RPROP training
fann_set_rprop_delta_max	Sets the maximum step-size
fann_set_rprop_delta_min	Sets the minimum step-size
fann_set_rprop_delta_zero	Sets the initial step-size
fann_set_rprop_increase_factor	Sets the increase factor used during RPROP training
fann_set_sarprop_step_error_shift	Sets the sarprop step error shift
fann_set_sarprop_step_error_threshold_factor	Sets the sarprop step error threshold factor
fann_set_sarprop_temperature	Sets the sarprop temperature
fann_set_sarprop_weight_decay_shift	Sets the sarprop weight decay shift
fann_set_scaling_params	Calculate input and output scaling parameters for future use based on training data
fann_set_training_algorithm	Sets the training algorithm
fann_set_train_error_function	Sets the error function used during training
fann_set_train_stop_function	Sets the stop function used during training
fann_set_weight	Set a connection in the network
fann_set_weight_array	Set connections in the network
fann_shuffle_train_data	Shuffles training data, randomizing the order
fann_subset_train_data	Returns an copy of a subset of the train data
fann_test	Test with a set of inputs, and a set of desired outputs
fann_test_data	Test a set of training data and calculates the MSE for the training data
fann_train	Train one iteration with a set of inputs, and a set of desired outputs
fann_train_epoch	Train one epoch with a set of training data
fann_train_on_data	Trains on an entire dataset for a period of time
fann_train_on_file	Trains on an entire dataset, which is read from file, for a period of time
fastcgi_finish_request	冲刷(flush)所有响应的数据给客户端
fbsql_affected_rows	Get number of affected rows in previous FrontBase operation
fbsql_autocommit	Enable or disable autocommit
fbsql_blob_size	Get the size of a BLOB
fbsql_change_user	Change logged in user of the active connection
fbsql_clob_size	Get the size of a CLOB
fbsql_close	Close FrontBase connection
fbsql_commit	Commits a transaction to the database
fbsql_connect	Open a connection to a FrontBase Server
fbsql_create_blob	Create a BLOB
fbsql_create_clob	Create a CLOB
fbsql_create_db	Create a FrontBase database
fbsql_database	Get or set the database name used with a connection
fbsql_database_password	Sets or retrieves the password for a FrontBase database
fbsql_data_seek	Move internal result pointer
fbsql_db_query	Send a FrontBase query
fbsql_db_status	Get the status for a given database
fbsql_drop_db	Drop (delete) a FrontBase database
fbsql_errno	Returns the error number from previous operation
fbsql_error	Returns the error message from previous operation
fbsql_fetch_array	Fetch a result row as an associative array, a numeric array, or both
fbsql_fetch_assoc	Fetch a result row as an associative array
fbsql_fetch_field	Get column information from a result and return as an object
fbsql_fetch_lengths	Get the length of each output in a result
fbsql_fetch_object	Fetch a result row as an object
fbsql_fetch_row	Get a result row as an enumerated array
fbsql_field_flags	Get the flags associated with the specified field in a result
fbsql_field_len	Returns the length of the specified field
fbsql_field_name	Get the name of the specified field in a result
fbsql_field_seek	Set result pointer to a specified field offset
fbsql_field_table	Get name of the table the specified field is in
fbsql_field_type	Get the type of the specified field in a result
fbsql_free_result	Free result memory
fbsql_get_autostart_info	说明
fbsql_hostname	Get or set the host name used with a connection
fbsql_insert_id	Get the id generated from the previous INSERT operation
fbsql_list_dbs	List databases available on a FrontBase server
fbsql_list_fields	List FrontBase result fields
fbsql_list_tables	List tables in a FrontBase database
fbsql_next_result	Move the internal result pointer to the next result
fbsql_num_fields	Get number of fields in result
fbsql_num_rows	Get number of rows in result
fbsql_password	Get or set the user password used with a connection
fbsql_pconnect	Open a persistent connection to a FrontBase Server
fbsql_query	Send a FrontBase query
fbsql_read_blob	Read a BLOB from the database
fbsql_read_clob	Read a CLOB from the database
fbsql_result	Get result data
fbsql_rollback	Rollback a transaction to the database
fbsql_rows_fetched	Get the number of rows affected by the last statement
fbsql_select_db	Select a FrontBase database
fbsql_set_characterset	Change input/output character set
fbsql_set_lob_mode	Set the LOB retrieve mode for a FrontBase result set
fbsql_set_password	Change the password for a given user
fbsql_set_transaction	Set the transaction locking and isolation
fbsql_start_db	Start a database on local or remote server
fbsql_stop_db	Stop a database on local or remote server
fbsql_tablename	别名 fbsql_table_name
fbsql_table_name	Get table name of field
fbsql_username	Get or set the username for the connection
fbsql_warnings	Enable or disable FrontBase warnings
fclose	关闭一个已打开的文件指针
fdf_add_doc_javascript	Adds javascript code to the FDF document
fdf_add_template	Adds a template into the FDF document
fdf_close	Close an FDF document
fdf_create	Create a new FDF document
fdf_enum_values	Call a user defined function for each document value
fdf_errno	Return error code for last fdf operation
fdf_error	Return error description for FDF error code
fdf_get_ap	Get the appearance of a field
fdf_get_attachment	Extracts uploaded file embedded in the FDF
fdf_get_encoding	Get the value of the /Encoding key
fdf_get_file	Get the value of the /F key
fdf_get_flags	Gets the flags of a field
fdf_get_opt	Gets a value from the opt array of a field
fdf_get_status	Get the value of the /STATUS key
fdf_get_value	Get the value of a field
fdf_get_version	Gets version number for FDF API or file
fdf_header	Sets FDF-specific output headers
fdf_next_field_name	Get the next field name
fdf_open	Open a FDF document
fdf_open_string	Read a FDF document from a string
fdf_remove_item	Sets target frame for form
fdf_save	Save a FDF document
fdf_save_string	Returns the FDF document as a string
fdf_set_ap	Set the appearance of a field
fdf_set_encoding	Sets FDF character encoding
fdf_set_file	Set PDF document to display FDF data in
fdf_set_flags	Sets a flag of a field
fdf_set_javascript_action	Sets an javascript action of a field
fdf_set_on_import_javascript	Adds javascript code to be executed when Acrobat opens the FDF
fdf_set_opt	Sets an option of a field
fdf_set_status	Set the value of the /STATUS key
fdf_set_submit_form_action	Sets a submit form action of a field
fdf_set_target_frame	Set target frame for form display
fdf_set_value	Set the value of a field
fdf_set_version	Sets version number for a FDF file
feof	测试文件指针是否到了文件结束的位置
fflush	将缓冲内容输出到文件
fgetc	从文件指针中读取字符
fgetcsv	从文件指针中读入一行并解析 CSV 字段
fgets	从文件指针中读取一行
fgetss	从文件指针中读取一行并过滤掉 HTML 标记
file	把整个文件读入一个数组中
fileatime	取得文件的上次访问时间
filectime	取得文件的 inode 修改时间
filegroup	取得文件的组
fileinode	取得文件的 inode
filemtime	取得文件修改时间
fileowner	取得文件的所有者
fileperms	取得文件的权限
filepro	Read and verify the map file
filepro_fieldcount	Find out how many fields are in a filePro database
filepro_fieldname	Gets the name of a field
filepro_fieldtype	Gets the type of a field
filepro_fieldwidth	Gets the width of a field
filepro_retrieve	Retrieves data from a filePro database
filepro_rowcount	Find out how many rows are in a filePro database
filesize	取得文件大小
filetype	取得文件类型
file_exists	检查文件或目录是否存在
file_get_contents	将整个文件读入一个字符串
file_put_contents	将一个字符串写入文件
filter_has_var	Checks if variable of specified type exists
filter_id	返回与某个特定名称的过滤器相关联的id
filter_input	通过名称获取特定的外部变量，并且可以通过过滤器处理它
filter_input_array	获取一系列外部变量，并且可以通过过滤器处理它们
filter_list	返回所支持的过滤器列表
filter_var	使用特定的过滤器过滤一个变量
filter_var_array	获取多个变量并且过滤它们
finfo_close	关闭 fileinfo 资源
finfo_open	创建一个 fileinfo 资源
floatval	获取变量的浮点值
flock	轻便的咨询文件锁定
floor	舍去法取整
flush	刷新输出缓冲
fmod	返回除法的浮点数余数
fnmatch	用模式匹配文件名
fopen	打开文件或者 URL
forward_static_call	Call a static method
forward_static_call_array	Call a static method and pass the arguments as array
fpassthru	输出文件指针处的所有剩余数据
fprintf	将格式化后的字符串写入到流
fputcsv	将行格式化为 CSV 并写入文件指针
fputs	fwrite 的别名
fread	读取文件（可安全用于二进制文件）
FrenchToJD	从一个French Republican历法的日期得到Julian Day计数。
fribidi_log2vis	Convert a logical string to a visual one
fscanf	从文件中格式化输入
fseek	在文件指针中定位
fsockopen	打开一个网络连接或者一个Unix套接字连接
fstat	通过已打开的文件指针取得文件信息
ftell	返回文件指针读/写的位置
ftok	Convert a pathname and a project identifier to a System V IPC key
FTP context options	FTP context option listing
ftp_alloc	为要上传的文件分配空间
ftp_cdup	切换到当前目录的父目录
ftp_chdir	在 FTP 服务器上改变当前目录
ftp_chmod	设置 FTP 服务器上的文件权限
ftp_close	关闭一个 FTP 连接
ftp_connect	建立一个新的 FTP 连接
ftp_delete	删除 FTP 服务器上的一个文件
ftp_exec	请求运行一条 FTP 命令
ftp_fget	从 FTP 服务器上下载一个文件并保存到本地一个已经打开的文件中
ftp_fput	上传一个已经打开的文件到 FTP 服务器
ftp_get	从 FTP 服务器上下载一个文件
ftp_get_option	返回当前 FTP 连接的各种不同的选项设置
ftp_login	登录 FTP 服务器
ftp_mdtm	返回指定文件的最后修改时间
ftp_mkdir	建立新目录
ftp_nb_continue	连续获取／发送文件（non-blocking）
ftp_nb_fget	从 FTP 服务器获取文件并写入到一个打开的文件（非阻塞）
ftp_nb_fput	将文件存储到 FTP 服务器 （非阻塞）
ftp_nb_get	从 FTP 服务器上获取文件并写入本地文件（non-blocking）
ftp_nb_put	存储一个文件至 FTP 服务器（non-blocking）
ftp_nlist	返回给定目录的文件列表
ftp_pasv	返回当前 FTP 被动模式是否打开
ftp_put	上传文件到 FTP 服务器
ftp_pwd	返回当前目录名
ftp_quit	ftp_close 的 别名
ftp_raw	向 FTP 服务器发送命令
ftp_rawlist	返回指定目录下文件的详细列表
ftp_rename	更改 FTP 服务器上的文件或目录名
ftp_rmdir	删除 FTP 服务器上的一个目录
ftp_set_option	设置各种 FTP 运行时选项
ftp_site	向服务器发送 SITE 命令
ftp_size	返回指定文件的大小
ftp_ssl_connect	打开 SSL-FTP 连接
ftp_systype	返回远程 FTP 服务器的操作系统类型
ftruncate	将文件截断到给定的长度
function_exists	如果给定的函数已经被定义就返回 TRUE
func_get_arg	返回参数列表的某一项
func_get_args	返回一个包含函数参数列表的数组
func_num_args	Returns the number of arguments passed to the function
fwrite	写入文件（可安全用于二进制文件）

g

函数	说明
gc_collect_cycles	强制收集所有现存的垃圾循环周期
gc_disable	停用循环引用收集器
gc_enable	激活循环引用收集器
gc_enabled	返回循环引用计数器的状态
gc_mem_caches	Reclaims memory used by the Zend Engine memory manager
gd_info	取得当前安装的 GD 库的信息
geoip_asnum_by_name	Get the Autonomous System Numbers (ASN)
geoip_continent_code_by_name	Get the two letter continent code
geoip_country_code3_by_name	Get the three letter country code
geoip_country_code_by_name	Get the two letter country code
geoip_country_name_by_name	Get the full country name
geoip_database_info	Get GeoIP Database information
geoip_db_avail	Determine if GeoIP Database is available
geoip_db_filename	Returns the filename of the corresponding GeoIP Database
geoip_db_get_all_info	Returns detailed information about all GeoIP database types
geoip_domain_by_name	Get the second level domain name
geoip_id_by_name	Get the Internet connection type
geoip_isp_by_name	Get the Internet Service Provider (ISP) name
geoip_netspeedcell_by_name	Get the Internet connection speed
geoip_org_by_name	Get the organization name
geoip_record_by_name	Returns the detailed City information found in the GeoIP Database
geoip_region_by_name	Get the country code and region
geoip_region_name_by_code	Returns the region name for some country and region code combo
geoip_setup_custom_directory	Set a custom directory for the GeoIP database.
geoip_time_zone_by_country_and_region	Returns the time zone for some country and region code combo
getallheaders	获取全部 HTTP 请求头信息
getcwd	取得当前工作目录
getdate	取得日期／时间信息
getenv	获取一个环境变量的值
gethostbyaddr	获取指定的IP地址对应的主机名
gethostbyname	Get the IPv4 address corresponding to a given Internet host name
gethostbynamel	Get a list of IPv4 addresses corresponding to a given Internet host name
gethostname	Gets the host name
getimagesize	取得图像大小
getimagesizefromstring	从字符串中获取图像尺寸信息
getlastmod	获取页面最后修改的时间
getmxrr	Get MX records corresponding to a given Internet host name
getmygid	获取当前 PHP 脚本拥有者的 GID
getmyinode	获取当前脚本的索引节点（inode）
getmypid	获取 PHP 进程的 ID
getmyuid	获取 PHP 脚本所有者的 UID
getopt	从命令行参数列表中获取选项
getprotobyname	Get protocol number associated with protocol name
getprotobynumber	Get protocol name associated with protocol number
getrandmax	显示随机数最大的可能值
getrusage	获取当前资源使用状况
getservbyname	Get port number associated with an Internet service and protocol
getservbyport	Get Internet service which corresponds to port and protocol
gettext	Lookup a message in the current domain
gettimeofday	取得当前时间
gettype	获取变量的类型
get_browser	获取浏览器具有的功能
get_called_class	后期静态绑定（”Late Static Binding”）类的名称
get_cfg_var	获取 PHP 配置选项的值
get_class	返回对象的类名
get_class_methods	返回由类的方法名组成的数组
get_class_vars	返回由类的默认属性组成的数组
get_current_user	获取当前 PHP 脚本所有者名称
get_declared_classes	返回由已定义类的名字所组成的数组
get_declared_interfaces	返回一个数组包含所有已声明的接口
get_declared_traits	返回所有已定义的 traits 的数组
get_defined_constants	返回所有常量的关联数组，键是常量名，值是常量值
get_defined_functions	Returns an array of all defined functions
get_defined_vars	返回由所有已定义变量所组成的数组
get_extension_funcs	返回模块函数名称的数组
get_headers	取得服务器响应一个 HTTP 请求所发送的所有标头
get_html_translation_table	返回使用 htmlspecialchars 和 htmlentities 后的转换表
get_included_files	返回被 include 和 require 文件名的 array
get_include_path	获取当前的 include_path 配置选项
get_loaded_extensions	返回所有编译并加载模块名的 array
get_magic_quotes_gpc	获取当前 magic_quotes_gpc 的配置选项设置
get_magic_quotes_runtime	获取当前 magic_quotes_runtime 配置选项的激活状态
get_meta_tags	从一个文件中提取所有的 meta 标签 content 属性，返回一个数组
get_object_vars	返回由对象属性组成的关联数组
get_parent_class	返回对象或类的父类名
get_required_files	别名 get_included_files
get_resources	Returns active resources
get_resource_type	返回资源（resource）类型
glob	寻找与模式匹配的文件路径
gmdate	格式化一个 GMT/UTC 日期／时间
gmmktime	取得 GMT 日期的 UNIX 时间戳
gmp_abs	Absolute value
gmp_add	Add numbers
gmp_and	Bitwise AND
gmp_clrbit	Clear bit
gmp_cmp	Compare numbers
gmp_com	Calculates one’s complement
gmp_div	别名 gmp_div_q
gmp_divexact	Exact division of numbers
gmp_div_q	Divide numbers
gmp_div_qr	Divide numbers and get quotient and remainder
gmp_div_r	Remainder of the division of numbers
gmp_export	Export to a binary string
gmp_fact	Factorial
gmp_gcd	Calculate GCD
gmp_gcdext	Calculate GCD and multipliers
gmp_hamdist	Hamming distance
gmp_import	Import from a binary string
gmp_init	Create GMP number
gmp_intval	Convert GMP number to integer
gmp_invert	Inverse by modulo
gmp_jacobi	Jacobi symbol
gmp_legendre	Legendre symbol
gmp_mod	Modulo operation
gmp_mul	Multiply numbers
gmp_neg	Negate number
gmp_nextprime	Find next prime number
gmp_or	Bitwise OR
gmp_perfect_square	Perfect square check
gmp_popcount	Population count
gmp_pow	Raise number into power
gmp_powm	Raise number into power with modulo
gmp_prob_prime	Check if number is “probably prime”
gmp_random	Random number
gmp_random_bits	Random number
gmp_random_range	Random number
gmp_random_seed	Sets the RNG seed
gmp_root	Take the integer part of nth root
gmp_rootrem	Take the integer part and remainder of nth root
gmp_scan0	Scan for 0
gmp_scan1	Scan for 1
gmp_setbit	Set bit
gmp_sign	Sign of number
gmp_sqrt	Calculate square root
gmp_sqrtrem	Square root with remainder
gmp_strval	Convert GMP number to string
gmp_sub	Subtract numbers
gmp_testbit	Tests if a bit is set
gmp_xor	Bitwise XOR
gmstrftime	根据区域设置格式化 GMT/UTC 时间／日期
gnupg_adddecryptkey	Add a key for decryption
gnupg_addencryptkey	Add a key for encryption
gnupg_addsignkey	Add a key for signing
gnupg_cleardecryptkeys	Removes all keys which were set for decryption before
gnupg_clearencryptkeys	Removes all keys which were set for encryption before
gnupg_clearsignkeys	Removes all keys which were set for signing before
gnupg_decrypt	Decrypts a given text
gnupg_decryptverify	Decrypts and verifies a given text
gnupg_encrypt	Encrypts a given text
gnupg_encryptsign	Encrypts and signs a given text
gnupg_export	Exports a key
gnupg_geterror	Returns the errortext, if a function fails
gnupg_getprotocol	Returns the currently active protocol for all operations
gnupg_import	Imports a key
gnupg_init	Initialize a connection
gnupg_keyinfo	Returns an array with information about all keys that matches the given pattern
gnupg_setarmor	Toggle armored output
gnupg_seterrormode	Sets the mode for error_reporting
gnupg_setsignmode	Sets the mode for signing
gnupg_sign	Signs a given text
gnupg_verify	Verifies a signed text
gopher_parsedir	Translate a gopher formatted directory entry into an associative array.
grapheme_extract	Function to extract a sequence of default grapheme clusters from a text buffer, which must be encoded in UTF-8.
grapheme_stripos	Find position (in grapheme units) of first occurrence of a case-insensitive string
grapheme_stristr	Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack.
grapheme_strlen	Get string length in grapheme units
grapheme_strpos	Find position (in grapheme units) of first occurrence of a string
grapheme_strripos	Find position (in grapheme units) of last occurrence of a case-insensitive string
grapheme_strrpos	Find position (in grapheme units) of last occurrence of a string
grapheme_strstr	Returns part of haystack string from the first occurrence of needle to the end of haystack.
grapheme_substr	Return part of a string
GregorianToJD	转变一个Gregorian历法日期到Julian Day计数
gupnp_context_get_host_ip	Get the IP address
gupnp_context_get_port	Get the port
gupnp_context_get_subscription_timeout	Get the event subscription timeout
gupnp_context_host_path	Start hosting
gupnp_context_new	Create a new context
gupnp_context_set_subscription_timeout	Sets the event subscription timeout
gupnp_context_timeout_add	Sets a function to be called at regular intervals
gupnp_context_unhost_path	Stop hosting
gupnp_control_point_browse_start	Start browsing
gupnp_control_point_browse_stop	Stop browsing
gupnp_control_point_callback_set	Set control point callback
gupnp_control_point_new	Create a new control point
gupnp_device_action_callback_set	Set device callback function
gupnp_device_info_get	Get info of root device
gupnp_device_info_get_service	Get the service with type
gupnp_root_device_get_available	Check whether root device is available
gupnp_root_device_get_relative_location	Get the relative location of root device.
gupnp_root_device_new	Create a new root device
gupnp_root_device_set_available	Set whether or not root_device is available
gupnp_root_device_start	Start main loop
gupnp_root_device_stop	Stop main loop
gupnp_service_action_get	Retrieves the specified action arguments
gupnp_service_action_return	Return successfully
gupnp_service_action_return_error	Return error code
gupnp_service_action_set	Sets the specified action return values
gupnp_service_freeze_notify	Freeze new notifications
gupnp_service_info_get	Get full info of service
gupnp_service_info_get_introspection	Get resource introspection of service
gupnp_service_introspection_get_state_variable	Returns the state variable data
gupnp_service_notify	Notifies listening clients
gupnp_service_proxy_action_get	Send action to the service and get value
gupnp_service_proxy_action_set	Send action to the service and set value
gupnp_service_proxy_add_notify	Sets up callback for variable change notification
gupnp_service_proxy_callback_set	Set service proxy callback for signal
gupnp_service_proxy_get_subscribed	Check whether subscription is valid to the service
gupnp_service_proxy_remove_notify	Cancels the variable change notification
gupnp_service_proxy_send_action	Send action with multiple parameters synchronously
gupnp_service_proxy_set_subscribed	(Un)subscribes to the service.
gupnp_service_thaw_notify	Sends out any pending notifications and stops queuing of new ones.
gzclose	Close an open gz-file pointer
gzcompress	Compress a string
gzdecode	Decodes a gzip compressed string
gzdeflate	Deflate a string
gzencode	Create a gzip compressed string
gzeof	Test for EOF on a gz-file pointer
gzfile	Read entire gz-file into an array
gzgetc	Get character from gz-file pointer
gzgets	Get line from file pointer
gzgetss	Get line from gz-file pointer and strip HTML tags
gzinflate	Inflate a deflated string
gzopen	Open gz-file
gzpassthru	Output all remaining data on a gz-file pointer
gzputs	别名 gzwrite
gzread	Binary-safe gz-file read
gzrewind	Rewind the position of a gz-file pointer
gzseek	Seek on a gz-file pointer
gztell	Tell gz-file pointer read/write position
gzuncompress	Uncompress a compressed string
gzwrite	Binary-safe gz-file write

h

函数	说明
hash	生成哈希值 （消息摘要）
hash_algos	返回已注册的哈希算法列表
hash_copy	拷贝哈希运算上下文
hash_equals	可防止时序攻击的字符串比较
hash_file	使用给定文件的内容生成哈希值
hash_final	结束增量哈希，并且返回摘要结果
hash_hmac	使用 HMAC 方法生成带有密钥的哈希值
hash_hmac_file	使用 HMAC 方法和给定文件的内容生成带密钥的哈希值
hash_init	初始化增量哈希运算上下文
hash_pbkdf2	生成所提供密码的 PBKDF2 密钥导出
hash_update	向活跃的哈希运算上下文中填充数据
hash_update_file	从文件向活跃的哈希运算上下文中填充数据
hash_update_stream	从打开的流向活跃的哈希运算上下文中填充数据
header	发送原生 HTTP 头
headers_list	Returns a list of response headers sent (or ready to send)
headers_sent	Checks if or where headers have been sent
header_register_callback	Call a header function
header_remove	Remove previously set headers
hebrev	将逻辑顺序希伯来文（logical-Hebrew）转换为视觉顺序希伯来文（visual-Hebrew）
hebrevc	将逻辑顺序希伯来文（logical-Hebrew）转换为视觉顺序希伯来文（visual-Hebrew），并且转换换行符
hex2bin	转换十六进制字符串为二进制字符串
hexdec	十六进制转换为十进制
highlight_file	语法高亮一个文件
highlight_string	字符串的语法高亮
htmlentities	Convert all applicable characters to HTML entities
htmlspecialchars	Convert special characters to HTML entities
htmlspecialchars_decode	将特殊的 HTML 实体转换回普通字符
html_entity_decode	Convert all HTML entities to their applicable characters
HTTP context 选项	HTTP context 的选项列表
http_build_cookie	Build cookie string
http_build_query	生成 URL-encode 之后的请求字符串
http_build_str	产生一个查询字符串
http_build_url	产生一个 URL
http_cache_etag	Caching by ETag
http_cache_last_modified	Caching by last modification
http_chunked_decode	Decode chunked-encoded data
http_date	Compose HTTP RFC compliant date
http_deflate	Deflate data
http_get	Perform GET request
http_get_request_body	Get request body as string
http_get_request_body_stream	Get request body as stream
http_get_request_headers	Get request headers as array
http_head	Perform HEAD request
http_inflate	Inflate data
http_match_etag	Match ETag
http_match_modified	Match last modification
http_match_request_header	Match any header
http_negotiate_charset	Negotiate client’s preferred character set
http_negotiate_content_type	Negotiate client’s preferred content type
http_negotiate_language	Negotiate client’s preferred language
http_parse_cookie	Parse HTTP cookie
http_parse_headers	Parse HTTP headers
http_parse_message	Parse HTTP messages
http_parse_params	Parse parameter list
http_persistent_handles_clean	Clean up persistent handles
http_persistent_handles_count	Stat persistent handles
http_persistent_handles_ident	Get/set ident of persistent handles
http_post_data	Perform POST request with pre-encoded data
http_post_fields	Perform POST request with data to be encoded
http_put_data	Perform PUT request with data
http_put_file	Perform PUT request with file
http_put_stream	Perform PUT request with stream
http_redirect	Issue HTTP redirect
http_request	Perform custom request
http_request_body_encode	Encode request body
http_request_method_exists	Check whether request method exists
http_request_method_name	Get request method name
http_request_method_register	Register request method
http_request_method_unregister	Unregister request method
http_response_code	Get or Set the HTTP response code
http_send_content_disposition	Send Content-Disposition
http_send_content_type	Send Content-Type
http_send_data	Send arbitrary data
http_send_file	Send file
http_send_last_modified	Send Last-Modified
http_send_status	Send HTTP response status
http_send_stream	Send stream
http_support	Check built-in HTTP support
http_throttle	HTTP throttling
hwapi_attribute_new	Creates instance of class hw_api_attribute
hwapi_content_new	Create new instance of class hw_api_content
hwapi_hgcsp	Returns object of class hw_api
hwapi_object_new	Creates a new instance of class hwapi_object_new
hypot	计算一直角三角形的斜边长度

i

函数	说明
ibase_add_user	Add a user to a security database
ibase_affected_rows	Return the number of rows that were affected by the previous query
ibase_backup	Initiates a backup task in the service manager and returns immediately
ibase_blob_add	Add data into a newly created blob
ibase_blob_cancel	Cancel creating blob
ibase_blob_close	Close blob
ibase_blob_create	Create a new blob for adding data
ibase_blob_echo	Output blob contents to browser
ibase_blob_get	Get len bytes data from open blob
ibase_blob_import	Create blob, copy file in it, and close it
ibase_blob_info	Return blob length and other useful info
ibase_blob_open	Open blob for retrieving data parts
ibase_close	Close a connection to an InterBase database
ibase_commit	Commit a transaction
ibase_commit_ret	Commit a transaction without closing it
ibase_connect	Open a connection to a database
ibase_db_info	Request statistics about a database
ibase_delete_user	Delete a user from a security database
ibase_drop_db	Drops a database
ibase_errcode	Return an error code
ibase_errmsg	Return error messages
ibase_execute	Execute a previously prepared query
ibase_fetch_assoc	Fetch a result row from a query as an associative array
ibase_fetch_object	Get an object from a InterBase database
ibase_fetch_row	Fetch a row from an InterBase database
ibase_field_info	Get information about a field
ibase_free_event_handler	Cancels a registered event handler
ibase_free_query	Free memory allocated by a prepared query
ibase_free_result	Free a result set
ibase_gen_id	Increments the named generator and returns its new value
ibase_maintain_db	Execute a maintenance command on the database server
ibase_modify_user	Modify a user to a security database
ibase_name_result	Assigns a name to a result set
ibase_num_fields	Get the number of fields in a result set
ibase_num_params	Return the number of parameters in a prepared query
ibase_param_info	Return information about a parameter in a prepared query
ibase_pconnect	Open a persistent connection to an InterBase database
ibase_prepare	Prepare a query for later binding of parameter placeholders and execution
ibase_query	Execute a query on an InterBase database
ibase_restore	Initiates a restore task in the service manager and returns immediately
ibase_rollback	Roll back a transaction
ibase_rollback_ret	Roll back a transaction without closing it
ibase_server_info	Request information about a database server
ibase_service_attach	Connect to the service manager
ibase_service_detach	Disconnect from the service manager
ibase_set_event_handler	Register a callback function to be called when events are posted
ibase_trans	Begin a transaction
ibase_wait_event	Wait for an event to be posted by the database
iconv	字符串按要求的字符编码来转换
iconv_get_encoding	获取 iconv 扩展的内部配置变量
iconv_mime_decode	Decodes a MIME header field
iconv_mime_decode_headers	一次性解码多个 MIME 头字段
iconv_mime_encode	Composes a MIME header field
iconv_set_encoding	为字符编码转换设定当前设置
iconv_strlen	返回字符串的字符数统计
iconv_strpos	Finds position of first occurrence of a needle within a haystack
iconv_strrpos	Finds the last occurrence of a needle within a haystack
iconv_substr	截取字符串的部分
id3_get_frame_long_name	Get the long name of an ID3v2 frame
id3_get_frame_short_name	Get the short name of an ID3v2 frame
id3_get_genre_id	Get the id for a genre
id3_get_genre_list	Get all possible genre values
id3_get_genre_name	Get the name for a genre id
id3_get_tag	Get all information stored in an ID3 tag
id3_get_version	Get version of an ID3 tag
id3_remove_tag	Remove an existing ID3 tag
id3_set_tag	Update information stored in an ID3 tag
idate	将本地时间日期格式化为整数
idn_to_ascii	Convert domain name to IDNA ASCII form.
idn_to_unicode	别名 idn_to_utf8
idn_to_utf8	Convert domain name from IDNA ASCII to Unicode.
ifxus_close_slob	Deletes the slob object
ifxus_create_slob	Creates an slob object and opens it
ifxus_free_slob	Deletes the slob object
ifxus_open_slob	Opens an slob object
ifxus_read_slob	Reads nbytes of the slob object
ifxus_seek_slob	Sets the current file or seek position
ifxus_tell_slob	Returns the current file or seek position
ifxus_write_slob	Writes a string into the slob object
ifx_affected_rows	Get number of rows affected by a query
ifx_blobinfile_mode	Set the default blob mode for all select queries
ifx_byteasvarchar	Set the default byte mode
ifx_close	Close Informix connection
ifx_connect	Open Informix server connection
ifx_copy_blob	Duplicates the given blob object
ifx_create_blob	Creates an blob object
ifx_create_char	Creates an char object
ifx_do	Execute a previously prepared SQL-statement
ifx_error	Returns error code of last Informix call
ifx_errormsg	Returns error message of last Informix call
ifx_fetch_row	Get row as an associative array
ifx_fieldproperties	List of SQL fieldproperties
ifx_fieldtypes	List of Informix SQL fields
ifx_free_blob	Deletes the blob object
ifx_free_char	Deletes the char object
ifx_free_result	Releases resources for the query
ifx_getsqlca	Get the contents of sqlca.sqlerrd[0..5] after a query
ifx_get_blob	Return the content of a blob object
ifx_get_char	Return the content of the char object
ifx_htmltbl_result	Formats all rows of a query into a HTML table
ifx_nullformat	Sets the default return value on a fetch row
ifx_num_fields	Returns the number of columns in the query
ifx_num_rows	Count the rows already fetched from a query
ifx_pconnect	Open persistent Informix connection
ifx_prepare	Prepare an SQL-statement for execution
ifx_query	Send Informix query
ifx_textasvarchar	Set the default text mode
ifx_update_blob	Updates the content of the blob object
ifx_update_char	Updates the content of the char object
ignore_user_abort	设置客户端断开连接时是否中断脚本的执行
iis_add_server	Creates a new virtual web server
iis_get_dir_security	Gets Directory Security
iis_get_script_map	Gets script mapping on a virtual directory for a specific extension
iis_get_server_by_comment	Return the instance number associated with the Comment
iis_get_server_by_path	Return the instance number associated with the Path
iis_get_server_rights	Gets server rights
iis_get_service_state	Returns the state for the service defined by ServiceId
iis_remove_server	Removes the virtual web server indicated by ServerInstance
iis_set_app_settings	Creates application scope for a virtual directory
iis_set_dir_security	Sets Directory Security
iis_set_script_map	Sets script mapping on a virtual directory
iis_set_server_rights	Sets server rights
iis_start_server	Starts the virtual web server
iis_start_service	Starts the service defined by ServiceId
iis_stop_server	Stops the virtual web server
iis_stop_service	Stops the service defined by ServiceId
image2wbmp	以 WBMP 格式将图像输出到浏览器或文件
imageaffine	返回经过仿射变换后的图像，剪切区域可选
imageaffinematrixconcat	Concat two matrices (as in doing many ops in one go)
imageaffinematrixget	Return an image containing the affine tramsformed src image, using an optional clipping area
imagealphablending	设定图像的混色模式
imageantialias	是否使用抗锯齿（antialias）功能
imagearc	画椭圆弧
imagechar	水平地画一个字符
imagecharup	垂直地画一个字符
imagecolorallocate	为一幅图像分配颜色
imagecolorallocatealpha	为一幅图像分配颜色 + alpha
imagecolorat	取得某像素的颜色索引值
imagecolorclosest	取得与指定的颜色最接近的颜色的索引值
imagecolorclosestalpha	取得与指定的颜色加透明度最接近的颜色
imagecolorclosesthwb	取得与给定颜色最接近的色度的黑白色的索引
imagecolordeallocate	取消图像颜色的分配
imagecolorexact	取得指定颜色的索引值
imagecolorexactalpha	取得指定的颜色加透明度的索引值
imagecolormatch	使一个图像中调色板版本的颜色与真彩色版本更能匹配
imagecolorresolve	取得指定颜色的索引值或有可能得到的最接近的替代值
imagecolorresolvealpha	取得指定颜色 + alpha 的索引值或有可能得到的最接近的替代值
imagecolorset	给指定调色板索引设定颜色
imagecolorsforindex	取得某索引的颜色
imagecolorstotal	取得一幅图像的调色板中颜色的数目
imagecolortransparent	将某个颜色定义为透明色
imageconvolution	用系数 div 和 offset 申请一个 3x3 的卷积矩阵
imagecopy	拷贝图像的一部分
imagecopymerge	拷贝并合并图像的一部分
imagecopymergegray	用灰度拷贝并合并图像的一部分
imagecopyresampled	重采样拷贝部分图像并调整大小
imagecopyresized	拷贝部分图像并调整大小
imagecreate	新建一个基于调色板的图像
imagecreatefromgd	从 GD 文件或 URL 新建一图像
imagecreatefromgd2	从 GD2 文件或 URL 新建一图像
imagecreatefromgd2part	从给定的 GD2 文件或 URL 中的部分新建一图像
imagecreatefromgif	由文件或 URL 创建一个新图象。
imagecreatefromjpeg	由文件或 URL 创建一个新图象。
imagecreatefrompng	由文件或 URL 创建一个新图象。
imagecreatefromstring	从字符串中的图像流新建一图像
imagecreatefromwbmp	由文件或 URL 创建一个新图象。
imagecreatefromwebp	由文件或 URL 创建一个新图象。
imagecreatefromxbm	由文件或 URL 创建一个新图象。
imagecreatefromxpm	由文件或 URL 创建一个新图象。
imagecreatetruecolor	新建一个真彩色图像
imagecrop	Crop an image using the given coordinates and size, x, y, width and height
imagecropauto	Crop an image automatically using one of the available modes
imagedashedline	画一虚线
imagedestroy	销毁一图像
imageellipse	画一个椭圆
imagefill	区域填充
imagefilledarc	画一椭圆弧且填充
imagefilledellipse	画一椭圆并填充
imagefilledpolygon	画一多边形并填充
imagefilledrectangle	画一矩形并填充
imagefilltoborder	区域填充到指定颜色的边界为止
imagefilter	对图像使用过滤器
imageflip	Flips an image using a given mode
imagefontheight	取得字体高度
imagefontwidth	取得字体宽度
imageftbbox	给出一个使用 FreeType 2 字体的文本框
imagefttext	使用 FreeType 2 字体将文本写入图像
imagegammacorrect	对 GD 图像应用 gamma 修正
imagegd	将 GD 图像输出到浏览器或文件
imagegd2	将 GD2 图像输出到浏览器或文件
imagegif	输出图象到浏览器或文件。
imagegrabscreen	Captures the whole screen
imagegrabwindow	Captures a window
imageinterlace	激活或禁止隔行扫描
imageistruecolor	检查图像是否为真彩色图像
imagejpeg	输出图象到浏览器或文件。
imagelayereffect	设定 alpha 混色标志以使用绑定的 libgd 分层效果
imageline	画一条线段
imageloadfont	载入一新字体
imagepalettecopy	将调色板从一幅图像拷贝到另一幅
imagepalettetotruecolor	Converts a palette based image to true color
imagepng	以 PNG 格式将图像输出到浏览器或文件
imagepolygon	画一个多边形
imagepsbbox	给出一个使用 PostScript Type1 字体的文本方框
imagepsencodefont	改变字体中的字符编码矢量
imagepsextendfont	扩充或精简字体
imagepsfreefont	释放一个 PostScript Type 1 字体所占用的内存
imagepsloadfont	从文件中加载一个 PostScript Type 1 字体
imagepsslantfont	倾斜某字体
imagepstext	用 PostScript Type1 字体把文本字符串画在图像上
imagerectangle	画一个矩形
imagerotate	用给定角度旋转图像
imagesavealpha	设置标记以在保存 PNG 图像时保存完整的 alpha 通道信息（与单一透明色相反）
imagescale	Scale an image using the given new width and height
imagesetbrush	设定画线用的画笔图像
imagesetinterpolation	Set the interpolation method
imagesetpixel	画一个单一像素
imagesetstyle	设定画线的风格
imagesetthickness	设定画线的宽度
imagesettile	设定用于填充的贴图
imagestring	水平地画一行字符串
imagestringup	垂直地画一行字符串
imagesx	取得图像宽度
imagesy	取得图像高度
imagetruecolortopalette	将真彩色图像转换为调色板图像
imagettfbbox	取得使用 TrueType 字体的文本的范围
imagettftext	用 TrueType 字体向图像写入文本
imagetypes	返回当前 PHP 版本所支持的图像类型
imagewbmp	以 WBMP 格式将图像输出到浏览器或文件
imagewebp	将 WebP 格式的图像输出到浏览器或文件
imagexbm	将 XBM 图像输出到浏览器或文件
image_type_to_extension	取得图像类型的文件后缀
image_type_to_mime_type	取得 getimagesize，exif_read_data，exif_thumbnail，exif_imagetype 所返回的图像类型的 MIME 类型
imap_8bit	Convert an 8bit string to a quoted-printable string
imap_alerts	Returns all IMAP alert messages that have occurred
imap_append	Append a string message to a specified mailbox
imap_base64	Decode BASE64 encoded text
imap_binary	Convert an 8bit string to a base64 string
imap_body	Read the message body
imap_bodystruct	Read the structure of a specified body section of a specific message
imap_check	Check current mailbox
imap_clearflag_full	Clears flags on messages
imap_close	Close an IMAP stream
imap_create	别名 imap_createmailbox
imap_createmailbox	Create a new mailbox
imap_delete	Mark a message for deletion from current mailbox
imap_deletemailbox	Delete a mailbox
imap_errors	Returns all of the IMAP errors that have occurred
imap_expunge	Delete all messages marked for deletion
imap_fetchbody	Fetch a particular section of the body of the message
imap_fetchheader	Returns header for a message
imap_fetchmime	Fetch MIME headers for a particular section of the message
imap_fetchstructure	Read the structure of a particular message
imap_fetchtext	别名 imap_body
imap_fetch_overview	Read an overview of the information in the headers of the given message
imap_gc	Clears IMAP cache
imap_getacl	Gets the ACL for a given mailbox
imap_getmailboxes	Read the list of mailboxes, returning detailed information on each one
imap_getsubscribed	List all the subscribed mailboxes
imap_get_quota	Retrieve the quota level settings, and usage statics per mailbox
imap_get_quotaroot	Retrieve the quota settings per user
imap_header	别名 imap_headerinfo
imap_headerinfo	Read the header of the message
imap_headers	Returns headers for all messages in a mailbox
imap_last_error	Gets the last IMAP error that occurred during this page request
imap_list	Read the list of mailboxes
imap_listmailbox	别名 imap_list
imap_listscan	Returns the list of mailboxes that matches the given text
imap_listsubscribed	别名 imap_lsub
imap_lsub	List all the subscribed mailboxes
imap_mail	Send an email message
imap_mailboxmsginfo	Get information about the current mailbox
imap_mail_compose	Create a MIME message based on given envelope and body sections
imap_mail_copy	Copy specified messages to a mailbox
imap_mail_move	Move specified messages to a mailbox
imap_mime_header_decode	Decode MIME header elements
imap_msgno	Gets the message sequence number for the given UID
imap_num_msg	Gets the number of messages in the current mailbox
imap_num_recent	Gets the number of recent messages in current mailbox
imap_open	Open an IMAP stream to a mailbox
imap_ping	Check if the IMAP stream is still active
imap_qprint	Convert a quoted-printable string to an 8 bit string
imap_rename	别名 imap_renamemailbox
imap_renamemailbox	Rename an old mailbox to new mailbox
imap_reopen	Reopen IMAP stream to new mailbox
imap_rfc822_parse_adrlist	Parses an address string
imap_rfc822_parse_headers	Parse mail headers from a string
imap_rfc822_write_address	Returns a properly formatted email address given the mailbox, host, and personal info
imap_savebody	Save a specific body section to a file
imap_scan	别名 imap_listscan
imap_scanmailbox	别名 imap_listscan
imap_search	This function returns an array of messages matching the given search criteria
imap_setacl	Sets the ACL for a given mailbox
imap_setflag_full	Sets flags on messages
imap_set_quota	Sets a quota for a given mailbox
imap_sort	Gets and sort messages
imap_status	Returns status information on a mailbox
imap_subscribe	Subscribe to a mailbox
imap_thread	Returns a tree of threaded message
imap_timeout	Set or fetch imap timeout
imap_uid	This function returns the UID for the given message sequence number
imap_undelete	Unmark the message which is marked deleted
imap_unsubscribe	Unsubscribe from a mailbox
imap_utf7_decode	Decodes a modified UTF-7 encoded string
imap_utf7_encode	Converts ISO-8859-1 string to modified UTF-7 text
imap_utf8	Converts MIME-encoded text to UTF-8
implode	将一个一维数组的值转化为字符串
import_request_variables	将 GET／POST／Cookie 变量导入到全局作用域中
inclued_get_data	Get the inclued data
inet_ntop	Converts a packed internet address to a human readable representation
inet_pton	Converts a human readable IP address to its packed in_addr representation
ingres_autocommit	Switch autocommit on or off
ingres_autocommit_state	Test if the connection is using autocommit
ingres_charset	Returns the installation character set
ingres_close	Close an Ingres database connection
ingres_commit	Commit a transaction
ingres_connect	Open a connection to an Ingres database
ingres_cursor	Get a cursor name for a given result resource
ingres_errno	Get the last Ingres error number generated
ingres_error	Get a meaningful error message for the last error generated
ingres_errsqlstate	Get the last SQLSTATE error code generated
ingres_escape_string	Escape special characters for use in a query
ingres_execute	Execute a prepared query
ingres_fetch_array	Fetch a row of result into an array
ingres_fetch_assoc	Fetch a row of result into an associative array
ingres_fetch_object	Fetch a row of result into an object
ingres_fetch_proc_return	Get the return value from a procedure call
ingres_fetch_row	Fetch a row of result into an enumerated array
ingres_field_length	Get the length of a field
ingres_field_name	Get the name of a field in a query result
ingres_field_nullable	Test if a field is nullable
ingres_field_precision	Get the precision of a field
ingres_field_scale	Get the scale of a field
ingres_field_type	Get the type of a field in a query result
ingres_free_result	Free the resources associated with a result identifier
ingres_next_error	Get the next Ingres error
ingres_num_fields	Get the number of fields returned by the last query
ingres_num_rows	Get the number of rows affected or returned by a query
ingres_pconnect	Open a persistent connection to an Ingres database
ingres_prepare	Prepare a query for later execution
ingres_query	Send an SQL query to Ingres
ingres_result_seek	Set the row position before fetching data
ingres_rollback	Roll back a transaction
ingres_set_environment	Set environment features controlling output options
ingres_unbuffered_query	Send an unbuffered SQL query to Ingres
ini_alter	别名 ini_set
ini_get	获取一个配置选项的值
ini_get_all	获取所有配置选项
ini_restore	恢复配置选项的值
ini_set	为一个配置选项设置值
inotify_add_watch	Add a watch to an initialized inotify instance
inotify_init	Initialize an inotify instance
inotify_queue_len	Return a number upper than zero if there are pending events
inotify_read	Read events from an inotify instance
inotify_rm_watch	Remove an existing watch from an inotify instance
intdiv	Integer division
interface_exists	检查接口是否已被定义
intl_error_name	Get symbolic name for a given error code
intl_get_error_code	Get the last error code
intl_get_error_message	Get description of the last error
intl_is_failure	Check whether the given error code indicates failure
intval	获取变量的整数值
in_array	检查数组中是否存在某个值
ip2long	将一个IPV4的字符串互联网协议转换成数字格式
iptcembed	将二进制 IPTC 数据嵌入到一幅 JPEG 图像中
iptcparse	将二进制 IPTC 块解析为单个标记
isset	检测变量是否设置
is_a	如果对象属于该类或该类是此对象的父类则返回 TRUE
is_array	检测变量是否是数组
is_bool	检测变量是否是布尔型
is_callable	检测参数是否为合法的可调用结构
is_dir	判断给定文件名是否是一个目录
is_double	is_float 的别名
is_executable	判断给定文件名是否可执行
is_file	判断给定文件名是否为一个正常的文件
is_finite	判断是否为有限值
is_float	检测变量是否是浮点型
is_infinite	判断是否为无限值
is_int	检测变量是否是整数
is_integer	is_int 的别名
is_link	判断给定文件名是否为一个符号连接
is_long	is_int 的别名
is_nan	判断是否为合法数值
is_null	检测变量是否为 NULL
is_numeric	检测变量是否为数字或数字字符串
is_object	检测变量是否是一个对象
is_readable	判断给定文件名是否可读
is_real	is_float 的别名
is_resource	检测变量是否为资源类型
is_scalar	检测变量是否是一个标量
is_soap_fault	Checks if a SOAP call has failed
is_string	检测变量是否是字符串
is_subclass_of	如果此对象是该类的子类，则返回 TRUE
is_tainted	Checks whether a string is tainted
is_uploaded_file	判断文件是否是通过 HTTP POST 上传的
is_writable	判断给定的文件名是否可写
is_writeable	is_writable 的别名
iterator_apply	为迭代器中每个元素调用一个用户自定义函数
iterator_count	计算迭代器中元素的个数
iterator_to_array	将迭代器中的元素拷贝到数组

j

函数	说明
JDDayOfWeek	返回星期的日期
JDMonthName	返回月份的名称
JDToFrench	转变一个Julian Day计数到French Republican历法的日期
JDToGregorian	转变一个Julian Day计数为Gregorian历法日期
jdtojewish	转换一个julian天数为Jewish历法的日期
JDToJulian	转变一个Julian Day计数到Julian历法的日期
jdtounix	转变Julian Day计数为一个Unix时间戳
JewishToJD	转变一个Jewish历法的日期为一个Julian Day计数
join	别名 implode
jpeg2wbmp	将 JPEG 图像文件转换为 WBMP 图像文件
json_decode	对 JSON 格式的字符串进行编码
json_encode	对变量进行 JSON 编码
json_last_error	返回最后发生的错误
json_last_error_msg	Returns the error string of the last json_encode() or json_decode() call
judy_type	Return the type of a Judy array
judy_version	Return or print the current PHP Judy version
JulianToJD	转变一个Julian历法的日期为Julian Day计数

k

函数	说明
kadm5_chpass_principal	Changes the principal’s password
kadm5_create_principal	Creates a kerberos principal with the given parameters
kadm5_delete_principal	Deletes a kerberos principal
kadm5_destroy	Closes the connection to the admin server and releases all related resources
kadm5_flush	Flush all changes to the Kerberos database
kadm5_get_policies	Gets all policies from the Kerberos database
kadm5_get_principal	Gets the principal’s entries from the Kerberos database
kadm5_get_principals	Gets all principals from the Kerberos database
kadm5_init_with_password	Opens a connection to the KADM5 library
kadm5_modify_principal	Modifies a kerberos principal with the given parameters
key	从关联数组中取得键名
key_exists	别名 array_key_exists
krsort	对数组按照键名逆向排序
ksort	对数组按照键名排序

l

函数	说明
lcfirst	使一个字符串的第一个字符小写
lcg_value	组合线性同余发生器
lchgrp	Changes group ownership of symlink
lchown	Changes user ownership of symlink
ldap_8859_to_t61	Translate 8859 characters to t61 characters
ldap_add	Add entries to LDAP directory
ldap_bind	绑定 LDAP 目录
ldap_close	别名 ldap_unbind
ldap_compare	Compare value of attribute found in entry specified with DN
ldap_connect	Connect to an LDAP server
ldap_control_paged_result	Send LDAP pagination control
ldap_control_paged_result_response	Retrieve the LDAP pagination cookie
ldap_count_entries	Count the number of entries in a search
ldap_delete	Delete an entry from a directory
ldap_dn2ufn	Convert DN to User Friendly Naming format
ldap_err2str	Convert LDAP error number into string error message
ldap_errno	Return the LDAP error number of the last LDAP command
ldap_error	Return the LDAP error message of the last LDAP command
ldap_escape	Escape a string for use in an LDAP filter or DN
ldap_explode_dn	Splits DN into its component parts
ldap_first_attribute	Return first attribute
ldap_first_entry	Return first result id
ldap_first_reference	Return first reference
ldap_free_result	Free result memory
ldap_get_attributes	Get attributes from a search result entry
ldap_get_dn	Get the DN of a result entry
ldap_get_entries	Get all result entries
ldap_get_option	Get the current value for given option
ldap_get_values	Get all values from a result entry
ldap_get_values_len	Get all binary values from a result entry
ldap_list	Single-level search
ldap_modify	Modify an LDAP entry
ldap_modify_batch	Batch and execute modifications on an LDAP entry
ldap_mod_add	Add attribute values to current attributes
ldap_mod_del	Delete attribute values from current attributes
ldap_mod_replace	Replace attribute values with new ones
ldap_next_attribute	Get the next attribute in result
ldap_next_entry	Get next result entry
ldap_next_reference	Get next reference
ldap_parse_reference	Extract information from reference entry
ldap_parse_result	Extract information from result
ldap_read	Read an entry
ldap_rename	Modify the name of an entry
ldap_sasl_bind	Bind to LDAP directory using SASL
ldap_search	Search LDAP tree
ldap_set_option	Set the value of the given option
ldap_set_rebind_proc	Set a callback function to do re-binds on referral chasing
ldap_sort	Sort LDAP result entries
ldap_start_tls	Start TLS
ldap_t61_to_8859	Translate t61 characters to 8859 characters
ldap_unbind	Unbind from LDAP directory
levenshtein	计算两个字符串之间的编辑距离
libxml_clear_errors	Clear libxml error buffer
libxml_disable_entity_loader	Disable the ability to load external entities
libxml_get_errors	Retrieve array of errors
libxml_get_last_error	Retrieve last error from libxml
libxml_set_external_entity_loader	Changes the default external entity loader
libxml_set_streams_context	Set the streams context for the next libxml document load or write
libxml_use_internal_errors	Disable libxml errors and allow user to fetch error information as needed
link	建立一个硬连接
linkinfo	获取一个连接的信息
list	把数组中的值赋给一些变量
localeconv	Get numeric formatting information
localtime	取得本地时间
log	自然对数
log1p	返回 log(1 + number)，甚至当 number 的值接近零也能计算出准确结果
log10	以 10 为底的对数
long2ip	Converts an long integer address into a string in (IPv4) Internet standard dotted format
lstat	给出一个文件或符号连接的信息
ltrim	删除字符串开头的空白字符（或其他字符）
lzf_compress	LZF compression
lzf_decompress	LZF decompression
lzf_optimized_for	Determines what LZF extension was optimized for

m

函数	说明
magic_quotes_runtime	别名 set_magic_quotes_runtime
mail	发送邮件
mailparse_determine_best_xfer_encoding	Gets the best way of encoding
mailparse_msg_create	Create a mime mail resource
mailparse_msg_extract_part	Extracts/decodes a message section
mailparse_msg_extract_part_file	Extracts/decodes a message section
mailparse_msg_extract_whole_part_file	Extracts a message section including headers without decoding the transfer encoding
mailparse_msg_free	Frees a MIME resource
mailparse_msg_get_part	Returns a handle on a given section in a mimemessage
mailparse_msg_get_part_data	Returns an associative array of info about the message
mailparse_msg_get_structure	Returns an array of mime section names in the supplied message
mailparse_msg_parse	Incrementally parse data into buffer
mailparse_msg_parse_file	Parses a file
mailparse_rfc822_parse_addresses	Parse RFC 822 compliant addresses
mailparse_stream_encode	Streams data from source file pointer, apply encoding and write to destfp
mailparse_uudecode_all	Scans the data from fp and extract each embedded uuencoded file
main	虚拟的main
max	找出最大值
maxdb_affected_rows	Gets the number of affected rows in a previous MaxDB operation
maxdb_autocommit	Turns on or off auto-commiting database modifications
maxdb_bind_param	别名 maxdb_stmt_bind_param
maxdb_bind_result	别名 maxdb_stmt_bind_result
maxdb_change_user	Changes the user of the specified database connection
maxdb_character_set_name	Returns the default character set for the database connection
maxdb_client_encoding	别名 maxdb_character_set_name
maxdb_close	Closes a previously opened database connection
maxdb_close_long_data	别名 maxdb_stmt_close_long_data
maxdb_commit	Commits the current transaction
maxdb_connect	Open a new connection to the MaxDB server
maxdb_connect_errno	Returns the error code from last connect call
maxdb_connect_error	Returns a string description of the last connect error
maxdb_data_seek	Adjusts the result pointer to an arbitary row in the result
maxdb_debug	Performs debugging operations
maxdb_disable_reads_from_master	Disable reads from master
maxdb_disable_rpl_parse	Disable RPL parse
maxdb_dump_debug_info	Dump debugging information into the log
maxdb_embedded_connect	Open a connection to an embedded MaxDB server
maxdb_enable_reads_from_master	Enable reads from master
maxdb_enable_rpl_parse	Enable RPL parse
maxdb_errno	Returns the error code for the most recent function call
maxdb_error	Returns a string description of the last error
maxdb_escape_string	别名 maxdb_real_escape_string
maxdb_execute	别名 maxdb_stmt_execute
maxdb_fetch	别名 maxdb_stmt_fetch
maxdb_fetch_array	Fetch a result row as an associative, a numeric array, or both
maxdb_fetch_assoc	Fetch a result row as an associative array
maxdb_fetch_field	Returns the next field in the result set
maxdb_fetch_fields	Returns an array of resources representing the fields in a result set
maxdb_fetch_field_direct	Fetch meta-data for a single field
maxdb_fetch_lengths	Returns the lengths of the columns of the current row in the result set
maxdb_fetch_object	Returns the current row of a result set as an object
maxdb_fetch_row	Get a result row as an enumerated array
maxdb_field_count	Returns the number of columns for the most recent query
maxdb_field_seek	Set result pointer to a specified field offset
maxdb_field_tell	Get current field offset of a result pointer
maxdb_free_result	Frees the memory associated with a result
maxdb_get_client_info	Returns the MaxDB client version as a string
maxdb_get_client_version	Get MaxDB client info
maxdb_get_host_info	Returns a string representing the type of connection used
maxdb_get_metadata	别名 maxdb_stmt_result_metadata
maxdb_get_proto_info	Returns the version of the MaxDB protocol used
maxdb_get_server_info	Returns the version of the MaxDB server
maxdb_get_server_version	Returns the version of the MaxDB server as an integer
maxdb_info	Retrieves information about the most recently executed query
maxdb_init	Initializes MaxDB and returns an resource for use with maxdb_real_connect
maxdb_insert_id	Returns the auto generated id used in the last query
maxdb_kill	Disconnects from a MaxDB server
maxdb_master_query	Enforce execution of a query on the master in a master/slave setup
maxdb_more_results	Check if there any more query results from a multi query
maxdb_multi_query	Performs a query on the database
maxdb_next_result	Prepare next result from multi_query
maxdb_num_fields	Get the number of fields in a result
maxdb_num_rows	Gets the number of rows in a result
maxdb_options	Set options
maxdb_param_count	别名 maxdb_stmt_param_count
maxdb_ping	Pings a server connection, or tries to reconnect if the connection has gone down
maxdb_prepare	Prepare an SQL statement for execution
maxdb_query	Performs a query on the database
maxdb_real_connect	Opens a connection to a MaxDB server
maxdb_real_escape_string	Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection
maxdb_real_query	Execute an SQL query
maxdb_report	Enables or disables internal report functions
maxdb_rollback	Rolls back current transaction
maxdb_rpl_parse_enabled	Check if RPL parse is enabled
maxdb_rpl_probe	RPL probe
maxdb_rpl_query_type	Returns RPL query type
maxdb_select_db	Selects the default database for database queries
maxdb_send_long_data	别名 maxdb_stmt_send_long_data
maxdb_send_query	Send the query and return
maxdb_server_end	Shut down the embedded server
maxdb_server_init	Initialize embedded server
maxdb_set_opt	别名 maxdb_options
maxdb_sqlstate	Returns the SQLSTATE error from previous MaxDB operation
maxdb_ssl_set	Used for establishing secure connections using SSL
maxdb_stat	Gets the current system status
maxdb_stmt_affected_rows	Returns the total number of rows changed, deleted, or inserted by the last executed statement
maxdb_stmt_bind_param	Binds variables to a prepared statement as parameters
maxdb_stmt_bind_result	Binds variables to a prepared statement for result storage
maxdb_stmt_close	Closes a prepared statement
maxdb_stmt_close_long_data	Ends a sequence of maxdb_stmt_send_long_data
maxdb_stmt_data_seek	Seeks to an arbitray row in statement result set
maxdb_stmt_errno	Returns the error code for the most recent statement call
maxdb_stmt_error	Returns a string description for last statement error
maxdb_stmt_execute	Executes a prepared Query
maxdb_stmt_fetch	Fetch results from a prepared statement into the bound variables
maxdb_stmt_free_result	Frees stored result memory for the given statement handle
maxdb_stmt_init	Initializes a statement and returns an resource for use with maxdb_stmt_prepare
maxdb_stmt_num_rows	Return the number of rows in statements result set
maxdb_stmt_param_count	Returns the number of parameter for the given statement
maxdb_stmt_prepare	Prepare an SQL statement for execution
maxdb_stmt_reset	Resets a prepared statement
maxdb_stmt_result_metadata	Returns result set metadata from a prepared statement
maxdb_stmt_send_long_data	Send data in blocks
maxdb_stmt_sqlstate	Returns SQLSTATE error from previous statement operation
maxdb_stmt_store_result	Transfers a result set from a prepared statement
maxdb_store_result	Transfers a result set from the last query
maxdb_thread_id	Returns the thread ID for the current connection
maxdb_thread_safe	Returns whether thread safety is given or not
maxdb_use_result	Initiate a result set retrieval
maxdb_warning_count	Returns the number of warnings from the last query for the given link
mb_check_encoding	检查字符串在指定的编码里是否有效
mb_convert_case	对字符串进行大小写转换
mb_convert_encoding	转换字符的编码
mb_convert_kana	Convert “kana” one from another (“zen-kaku”, “han-kaku” and more)
mb_convert_variables	转换一个或多个变量的字符编码
mb_decode_mimeheader	解码 MIME 头字段中的字符串
mb_decode_numericentity	根据 HTML 数字字符串解码成字符
mb_detect_encoding	检测字符的编码
mb_detect_order	设置/获取 字符编码的检测顺序
mb_encode_mimeheader	为 MIME 头编码字符串
mb_encode_numericentity	Encode character to HTML numeric string reference
mb_encoding_aliases	Get aliases of a known encoding type
mb_ereg	Regular expression match with multibyte support
mb_eregi	Regular expression match ignoring case with multibyte support
mb_eregi_replace	Replace regular expression with multibyte support ignoring case
mb_ereg_match	Regular expression match for multibyte string
mb_ereg_replace	Replace regular expression with multibyte support
mb_ereg_replace_callback	Perform a regular expresssion seach and replace with multibyte support using a callback
mb_ereg_search	Multibyte regular expression match for predefined multibyte string
mb_ereg_search_getpos	Returns start point for next regular expression match
mb_ereg_search_getregs	Retrieve the result from the last multibyte regular expression match
mb_ereg_search_init	Setup string and regular expression for a multibyte regular expression match
mb_ereg_search_pos	Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string
mb_ereg_search_regs	Returns the matched part of a multibyte regular expression
mb_ereg_search_setpos	Set start point of next regular expression match
mb_get_info	获取 mbstring 的内部设置
mb_http_input	检测 HTTP 输入字符编码
mb_http_output	设置/获取 HTTP 输出字符编码
mb_internal_encoding	设置/获取内部字符编码
mb_language	设置/获取当前的语言
mb_list_encodings	返回所有支持编码的数组
mb_output_handler	在输出缓冲中转换字符编码的回调函数
mb_parse_str	解析 GET/POST/COOKIE 数据并设置全局变量
mb_preferred_mime_name	获取 MIME 字符串
mb_regex_encoding	Set/Get character encoding for multibyte regex
mb_regex_set_options	Set/Get the default options for mbregex functions
mb_send_mail	发送编码过的邮件
mb_split	使用正则表达式分割多字节字符串
mb_strcut	获取字符的一部分
mb_strimwidth	获取按指定宽度截断的字符串
mb_stripos	大小写不敏感地查找字符串在另一个字符串中首次出现的位置
mb_stristr	大小写不敏感地查找字符串在另一个字符串里的首次出现
mb_strlen	获取字符串的长度
mb_strpos	查找字符串在另一个字符串中首次出现的位置
mb_strrchr	查找指定字符在另一个字符串中最后一次的出现
mb_strrichr	大小写不敏感地查找指定字符在另一个字符串中最后一次的出现
mb_strripos	大小写不敏感地在字符串中查找一个字符串最后出现的位置
mb_strrpos	查找字符串在一个字符串中最后出现的位置
mb_strstr	查找字符串在另一个字符串里的首次出现
mb_strtolower	使字符串小写
mb_strtoupper	使字符串大写
mb_strwidth	返回字符串的宽度
mb_substitute_character	设置/获取替代字符
mb_substr	获取字符串的部分
mb_substr_count	统计字符串出现的次数
mcrypt_cbc	以 CBC 模式加解密数据
mcrypt_cfb	以 CFB 模式加解密数据
mcrypt_create_iv	从随机源创建初始向量
mcrypt_decrypt	使用给定参数解密密文
mcrypt_ecb	已废弃：使用 ECB 模式加解密数据
mcrypt_encrypt	使用给定参数加密明文
mcrypt_enc_get_algorithms_name	返回打开的算法名称
mcrypt_enc_get_block_size	返回打开的算法的分组大小
mcrypt_enc_get_iv_size	返回打开的算法的初始向量大小
mcrypt_enc_get_key_size	返回打开的模式所能支持的最长密钥
mcrypt_enc_get_modes_name	返回打开的模式的名称
mcrypt_enc_get_supported_key_sizes	以数组方式返回打开的算法所支持的密钥长度
mcrypt_enc_is_block_algorithm	检测打开模式的算法是否为分组算法
mcrypt_enc_is_block_algorithm_mode	检测打开的模式是否支持分组加密
mcrypt_enc_is_block_mode	检测打开的模式是否以分组方式输出
mcrypt_enc_self_test	在打开的模块上进行自检
mcrypt_generic	加密数据
mcrypt_generic_deinit	对加密模块进行清理工作
mcrypt_generic_end	终止加密
mcrypt_generic_init	初始化加密所需的缓冲区
mcrypt_get_block_size	获得加密算法的分组大小
mcrypt_get_cipher_name	获取加密算法名称
mcrypt_get_iv_size	返回指定算法/模式组合的初始向量大小
mcrypt_get_key_size	获取指定加密算法的密钥大小
mcrypt_list_algorithms	获取支持的加密算法
mcrypt_list_modes	获取所支持的模式
mcrypt_module_close	关闭加密模块
mcrypt_module_get_algo_block_size	返回指定算法的分组大小
mcrypt_module_get_algo_key_size	获取打开模式所支持的最大密钥大小
mcrypt_module_get_supported_key_sizes	以数组形式返回打开的算法所支持的密钥大小
mcrypt_module_is_block_algorithm	检测指定算法是否为分组加密算法
mcrypt_module_is_block_algorithm_mode	返回指定模块是否是分组加密模式
mcrypt_module_is_block_mode	检测指定模式是否以分组方式输出
mcrypt_module_open	打开算法和模式对应的模块
mcrypt_module_self_test	在指定模块上执行自检
mcrypt_ofb	使用 OFB 模式加密/解密数据
md5	计算字符串的 MD5 散列值
md5_file	计算指定文件的 MD5 散列值
mdecrypt_generic	解密数据
memcache_debug	转换调试输出的开/关
memory_get_peak_usage	返回分配给 PHP 内存的峰值
memory_get_usage	返回分配给 PHP 的内存量
metaphone	Calculate the metaphone key of a string
method_exists	检查类的方法是否存在
mhash	Computes hash
mhash_count	Gets the highest available hash ID
mhash_get_block_size	Gets the block size of the specified hash
mhash_get_hash_name	Gets the name of the specified hash
mhash_keygen_s2k	Generates a key
microtime	返回当前 Unix 时间戳和微秒数
mime_content_type	检测文件的 MIME 类型（已废弃）
min	找出最小值
ming_keypress	Returns the action flag for keyPress(char)
ming_setcubicthreshold	Set cubic threshold
ming_setscale	Set the global scaling factor.
ming_setswfcompression	Sets the SWF output compression
ming_useconstants	Use constant pool
ming_useswfversion	Sets the SWF version
mkdir	新建目录
mktime	取得一个日期的 Unix 时间戳
money_format	Formats a number as a currency string
MongoDB context options	MongoDB context option listing
MongoDB\BSON\fromJSON	Returns the BSON representation of a JSON value
MongoDB\BSON\fromPHP	Returns the BSON representation of a PHP value
MongoDB\BSON\toJSON	Returns the JSON representation of a BSON value
MongoDB\BSON\toPHP	Returns the PHP representation of a BSON value
move_uploaded_file	将上传的文件移动到新位置
mqseries_back	MQSeries MQBACK
mqseries_begin	MQseries MQBEGIN
mqseries_close	MQSeries MQCLOSE
mqseries_cmit	MQSeries MQCMIT
mqseries_conn	MQSeries MQCONN
mqseries_connx	MQSeries MQCONNX
mqseries_disc	MQSeries MQDISC
mqseries_get	MQSeries MQGET
mqseries_inq	MQSeries MQINQ
mqseries_open	MQSeries MQOPEN
mqseries_put	MQSeries MQPUT
mqseries_put1	MQSeries MQPUT1
mqseries_set	MQSeries MQSET
mqseries_strerror	Returns the error message corresponding to a result code (MQRC).
msession_connect	Connect to msession server
msession_count	Get session count
msession_create	Create a session
msession_destroy	Destroy a session
msession_disconnect	Close connection to msession server
msession_find	Find all sessions with name and value
msession_get	Get value from session
msession_get_array	Get array of msession variables
msession_get_data	Get data session unstructured data
msession_inc	Increment value in session
msession_list	List all sessions
msession_listvar	List sessions with variable
msession_lock	Lock a session
msession_plugin	Call an escape function within the msession personality plugin
msession_randstr	Get random string
msession_set	Set value in session
msession_set_array	Set msession variables from an array
msession_set_data	Set data session unstructured data
msession_timeout	Set/get session timeout
msession_uniq	Get unique id
msession_unlock	Unlock a session
msg_get_queue	Create or attach to a message queue
msg_queue_exists	Check whether a message queue exists
msg_receive	Receive a message from a message queue
msg_remove_queue	Destroy a message queue
msg_send	Send a message to a message queue
msg_set_queue	Set information in the message queue data structure
msg_stat_queue	Returns information from the message queue data structure
msql	Alias of msql_db_query
msql_affected_rows	Returns number of affected rows
msql_close	Close mSQL connection
msql_connect	Open mSQL connection
msql_createdb	别名 msql_create_db
msql_create_db	Create mSQL database
msql_data_seek	Move internal row pointer
msql_dbname	别名 msql_result
msql_db_query	Send mSQL query
msql_drop_db	Drop (delete) mSQL database
msql_error	Returns error message of last msql call
msql_fetch_array	Fetch row as array
msql_fetch_field	Get field information
msql_fetch_object	Fetch row as object
msql_fetch_row	Get row as enumerated array
msql_fieldflags	Alias of msql_field_flags
msql_fieldlen	Alias of msql_field_len
msql_fieldname	Alias of msql_field_name
msql_fieldtable	Alias of msql_field_table
msql_fieldtype	Alias of msql_field_type
msql_field_flags	Get field flags
msql_field_len	Get field length
msql_field_name	Get the name of the specified field in a result
msql_field_seek	Set field offset
msql_field_table	Get table name for field
msql_field_type	Get field type
msql_free_result	Free result memory
msql_list_dbs	List mSQL databases on server
msql_list_fields	List result fields
msql_list_tables	List tables in an mSQL database
msql_numfields	Alias of msql_num_fields
msql_numrows	Alias of msql_num_rows
msql_num_fields	Get number of fields in result
msql_num_rows	Get number of rows in result
msql_pconnect	Open persistent mSQL connection
msql_query	Send mSQL query
msql_regcase	Alias of sql_regcase
msql_result	Get result data
msql_select_db	Select mSQL database
msql_tablename	Alias of msql_result
mssql_bind	Adds a parameter to a stored procedure or a remote stored procedure
mssql_close	关闭MS SQL Server链接
mssql_connect	打开MS SQL server链接
mssql_data_seek	Moves internal row pointer
mssql_execute	Executes a stored procedure on a MS SQL server database
mssql_fetch_array	Fetch a result row as an associative array, a numeric array, or both
mssql_fetch_assoc	Returns an associative array of the current row in the result
mssql_fetch_batch	Returns the next batch of records
mssql_fetch_field	Get field information
mssql_fetch_object	Fetch row as object
mssql_fetch_row	Get row as enumerated array
mssql_field_length	Get the length of a field
mssql_field_name	Get the name of a field
mssql_field_seek	Seeks to the specified field offset
mssql_field_type	Gets the type of a field
mssql_free_result	Free result memory
mssql_free_statement	Free statement memory
mssql_get_last_message	Returns the last message from the server
mssql_guid_string	Converts a 16 byte binary GUID to a string
mssql_init	Initializes a stored procedure or a remote stored procedure
mssql_min_error_severity	Sets the minimum error severity
mssql_min_message_severity	Sets the minimum message severity
mssql_next_result	Move the internal result pointer to the next result
mssql_num_fields	Gets the number of fields in result
mssql_num_rows	Gets the number of rows in result
mssql_pconnect	Open persistent MS SQL connection
mssql_query	Send MS SQL query
mssql_result	Get result data
mssql_rows_affected	Returns the number of records affected by the query
mssql_select_db	Select MS SQL database
mt_getrandmax	显示随机数的最大可能值
mt_rand	生成更好的随机数
mt_srand	播下一个更好的随机数发生器种子
mysqli_bind_param	mysqli_stmt_bind_param的别名
mysqli_bind_result	mysqli_stmt_bind_result的别名
mysqli_client_encoding	mysqli_character_set_name的别名
mysqli_disable_rpl_parse	禁用RPL解析
mysqli_enable_reads_from_master	开启从主机读取
mysqli_enable_rpl_parse	开启RPL解析
mysqli_escape_string	别名 mysqli_real_escape_string
mysqli_execute	mysqli_stmt_execute的别名
mysqli_fetch	mysqli_stmt_fetch的别名。
mysqli_get_cache_stats	返回客户端Zval缓存统计信息
mysqli_get_client_stats	Returns client per-process statistics
mysqli_get_client_version	Returns the MySQL client version as an integer
mysqli_get_links_stats	Return information about open and cached links
mysqli_get_metadata	mysqli_stmt_result_metadata的别名
mysqli_master_query	在主/从机制中强制在主机中执行一个查询
mysqli_param_count	mysqli_stmt_param_count的别名
mysqli_report	开启或禁用（Mysql）内部（错误）报告函数
mysqli_rpl_parse_enabled	检查是否开启了RPL解析
mysqli_rpl_probe	RPL探测
mysqli_send_long_data	mysqli_stmt_send_long_data的别名
mysqli_set_opt	mysqli_options的别名
mysqli_slave_query	在主/从机制中强制在从机上执行一个查询
mysqlnd_memcache_get_config	Returns information about the plugin configuration
mysqlnd_memcache_set	Associate a MySQL connection with a Memcache connection
mysqlnd_ms_dump_servers	Returns a list of currently configured servers
mysqlnd_ms_fabric_select_global	Switch to global sharding server for a given table
mysqlnd_ms_fabric_select_shard	Switch to shard
mysqlnd_ms_get_last_gtid	返回最后的全局同步 ID (GTID)
mysqlnd_ms_get_last_used_connection	Returns an array which describes the last used connection
mysqlnd_ms_get_stats	Returns query distribution and connection statistics
mysqlnd_ms_match_wild	Finds whether a table name matches a wildcard pattern or not
mysqlnd_ms_query_is_select	查询给定的 SQL 会发送给 master、slave 还是最后使用的 MySQL server 执行。
mysqlnd_ms_set_qos	Sets the quality of service needed from the cluster
mysqlnd_ms_set_user_pick_server	Sets a callback for user-defined read/write splitting
mysqlnd_ms_xa_begin	Starts a distributed/XA transaction among MySQL servers
mysqlnd_ms_xa_commit	Commits a distributed/XA transaction among MySQL servers
mysqlnd_ms_xa_gc	Garbage collects unfinished XA transactions after severe errors
mysqlnd_ms_xa_rollback	Rolls back a distributed/XA transaction among MySQL servers
mysqlnd_qc_clear_cache	Flush all cache contents
mysqlnd_qc_get_available_handlers	Returns a list of available storage handler
mysqlnd_qc_get_cache_info	Returns information on the current handler, the number of cache entries and cache entries, if available
mysqlnd_qc_get_core_stats	Statistics collected by the core of the query cache
mysqlnd_qc_get_normalized_query_trace_log	Returns a normalized query trace log for each query inspected by the query cache
mysqlnd_qc_get_query_trace_log	Returns a backtrace for each query inspected by the query cache
mysqlnd_qc_set_cache_condition	Set conditions for automatic caching
mysqlnd_qc_set_is_select	Installs a callback which decides whether a statement is cached
mysqlnd_qc_set_storage_handler	Change current storage handler
mysqlnd_qc_set_user_handlers	Sets the callback functions for a user-defined procedural storage handler
mysqlnd_uh_convert_to_mysqlnd	Converts a MySQL connection handle into a mysqlnd connection handle
mysqlnd_uh_set_connection_proxy	Installs a proxy for mysqlnd connections
mysqlnd_uh_set_statement_proxy	Installs a proxy for mysqlnd statements
mysql_affected_rows	取得前一次 MySQL 操作所影响的记录行数
mysql_client_encoding	返回字符集的名称
mysql_close	关闭 MySQL 连接
mysql_connect	打开一个到 MySQL 服务器的连接
mysql_create_db	新建一个 MySQL 数据库
mysql_data_seek	移动内部结果的指针
mysql_db_name	取得结果数据
mysql_db_query	发送一条 MySQL 查询
mysql_drop_db	丢弃（删除）一个 MySQL 数据库
mysql_errno	返回上一个 MySQL 操作中的错误信息的数字编码
mysql_error	返回上一个 MySQL 操作产生的文本错误信息
mysql_escape_string	转义一个字符串用于 mysql_query
mysql_fetch_array	从结果集中取得一行作为关联数组，或数字数组，或二者兼有
mysql_fetch_assoc	从结果集中取得一行作为关联数组
mysql_fetch_field	从结果集中取得列信息并作为对象返回
mysql_fetch_lengths	取得结果集中每个输出的长度
mysql_fetch_object	从结果集中取得一行作为对象
mysql_fetch_row	从结果集中取得一行作为枚举数组
mysql_field_flags	从结果中取得和指定字段关联的标志
mysql_field_len	返回指定字段的长度
mysql_field_name	取得结果中指定字段的字段名
mysql_field_seek	将结果集中的指针设定为制定的字段偏移量
mysql_field_table	取得指定字段所在的表名
mysql_field_type	取得结果集中指定字段的类型
mysql_free_result	释放结果内存
mysql_get_client_info	取得 MySQL 客户端信息
mysql_get_host_info	取得 MySQL 主机信息
mysql_get_proto_info	取得 MySQL 协议信息
mysql_get_server_info	取得 MySQL 服务器信息
mysql_info	取得最近一条查询的信息
mysql_insert_id	取得上一步 INSERT 操作产生的 ID
mysql_list_dbs	列出 MySQL 服务器中所有的数据库
mysql_list_fields	列出 MySQL 结果中的字段
mysql_list_processes	列出 MySQL 进程
mysql_list_tables	列出 MySQL 数据库中的表
mysql_num_fields	取得结果集中字段的数目
mysql_num_rows	取得结果集中行的数目
mysql_pconnect	打开一个到 MySQL 服务器的持久连接
mysql_ping	Ping 一个服务器连接，如果没有连接则重新连接
mysql_query	发送一条 MySQL 查询
mysql_real_escape_string	转义 SQL 语句中使用的字符串中的特殊字符，并考虑到连接的当前字符集
mysql_result	取得结果数据
mysql_select_db	选择 MySQL 数据库
mysql_set_charset	设置客户端的字符集
mysql_stat	取得当前系统状态
mysql_tablename	取得表名
mysql_thread_id	返回当前线程的 ID
mysql_unbuffered_query	向 MySQL 发送一条 SQL 查询，并不获取和缓存结果的行
m_checkstatus	Check to see if a transaction has completed
m_completeauthorizations	Number of complete authorizations in queue, returning an array of their identifiers
m_connect	Establish the connection to MCVE
m_connectionerror	Get a textual representation of why a connection failed
m_deletetrans	Delete specified transaction from MCVE_CONN structure
m_destroyconn	Destroy the connection and MCVE_CONN structure
m_destroyengine	Free memory associated with IP/SSL connectivity
m_getcell	Get a specific cell from a comma delimited response by column name
m_getcellbynum	Get a specific cell from a comma delimited response by column number
m_getcommadelimited	Get the RAW comma delimited data returned from MCVE
m_getheader	Get the name of the column in a comma-delimited response
m_initconn	Create and initialize an MCVE_CONN structure
m_initengine	Ready the client for IP/SSL Communication
m_iscommadelimited	Checks to see if response is comma delimited
m_maxconntimeout	The maximum amount of time the API will attempt a connection to MCVE
m_monitor	Perform communication with MCVE (send/receive data) Non-blocking
m_numcolumns	Number of columns returned in a comma delimited response
m_numrows	Number of rows returned in a comma delimited response
m_parsecommadelimited	Parse the comma delimited response so m_getcell, etc will work
m_responsekeys	Returns array of strings which represents the keys that can be used for response parameters on this transaction
m_responseparam	Get a custom response parameter
m_returnstatus	Check to see if the transaction was successful
m_setblocking	Set blocking/non-blocking mode for connection
m_setdropfile	Set the connection method to Drop-File
m_setip	Set the connection method to IP
m_setssl	Set the connection method to SSL
m_setssl_cafile	Set SSL CA (Certificate Authority) file for verification of server certificate
m_setssl_files	Set certificate key files and certificates if server requires client certificate verification
m_settimeout	Set maximum transaction time (per trans)
m_sslcert_gen_hash	Generate hash for SSL client certificate verification
m_transactionssent	Check to see if outgoing buffer is clear
m_transinqueue	Number of transactions in client-queue
m_transkeyval	Add key/value pair to a transaction. Replaces deprecated transparam()
m_transnew	Start a new transaction
m_transsend	Finalize and send the transaction
m_uwait	Wait x microsecs
m_validateidentifier	Whether or not to validate the passed identifier on any transaction it is passed to
m_verifyconnection	Set whether or not to PING upon connect to verify connection
m_verifysslcert	Set whether or not to verify the server ssl certificate

n

函数	说明
natcasesort	用“自然排序”算法对数组进行不区分大小写字母的排序
natsort	用“自然排序”算法对数组排序
ncurses_addch	Add character at current position and advance cursor
ncurses_addchnstr	Add attributed string with specified length at current position
ncurses_addchstr	Add attributed string at current position
ncurses_addnstr	Add string with specified length at current position
ncurses_addstr	Output text at current position
ncurses_assume_default_colors	Define default colors for color 0
ncurses_attroff	Turn off the given attributes
ncurses_attron	Turn on the given attributes
ncurses_attrset	Set given attributes
ncurses_baudrate	Returns baudrate of terminal
ncurses_beep	Let the terminal beep
ncurses_bkgd	Set background property for terminal screen
ncurses_bkgdset	Control screen background
ncurses_border	Draw a border around the screen using attributed characters
ncurses_bottom_panel	Moves a visible panel to the bottom of the stack
ncurses_can_change_color	Checks if terminal color definitions can be changed
ncurses_cbreak	Switch off input buffering
ncurses_clear	Clear screen
ncurses_clrtobot	Clear screen from current position to bottom
ncurses_clrtoeol	Clear screen from current position to end of line
ncurses_color_content	Retrieves RGB components of a color
ncurses_color_set	Set active foreground and background colors
ncurses_curs_set	Set cursor state
ncurses_define_key	Define a keycode
ncurses_def_prog_mode	Saves terminals (program) mode
ncurses_def_shell_mode	Saves terminals (shell) mode
ncurses_delay_output	Delay output on terminal using padding characters
ncurses_delch	Delete character at current position, move rest of line left
ncurses_deleteln	Delete line at current position, move rest of screen up
ncurses_delwin	Delete a ncurses window
ncurses_del_panel	Remove panel from the stack and delete it (but not the associated window)
ncurses_doupdate	Write all prepared refreshes to terminal
ncurses_echo	Activate keyboard input echo
ncurses_echochar	Single character output including refresh
ncurses_end	Stop using ncurses, clean up the screen
ncurses_erase	Erase terminal screen
ncurses_erasechar	Returns current erase character
ncurses_filter	Set LINES for iniscr() and newterm() to 1
ncurses_flash	Flash terminal screen (visual bell)
ncurses_flushinp	Flush keyboard input buffer
ncurses_getch	Read a character from keyboard
ncurses_getmaxyx	Returns the size of a window
ncurses_getmouse	Reads mouse event
ncurses_getyx	Returns the current cursor position for a window
ncurses_halfdelay	Put terminal into halfdelay mode
ncurses_has_colors	Checks if terminal has color capabilities
ncurses_has_ic	Check for insert- and delete-capabilities
ncurses_has_il	Check for line insert- and delete-capabilities
ncurses_has_key	Check for presence of a function key on terminal keyboard
ncurses_hide_panel	Remove panel from the stack, making it invisible
ncurses_hline	Draw a horizontal line at current position using an attributed character and max. n characters long
ncurses_inch	Get character and attribute at current position
ncurses_init	Initialize ncurses
ncurses_init_color	Define a terminal color
ncurses_init_pair	Define a color pair
ncurses_insch	Insert character moving rest of line including character at current position
ncurses_insdelln	Insert lines before current line scrolling down (negative numbers delete and scroll up)
ncurses_insertln	Insert a line, move rest of screen down
ncurses_insstr	Insert string at current position, moving rest of line right
ncurses_instr	Reads string from terminal screen
ncurses_isendwin	Ncurses is in endwin mode, normal screen output may be performed
ncurses_keyok	Enable or disable a keycode
ncurses_keypad	Turns keypad on or off
ncurses_killchar	Returns current line kill character
ncurses_longname	Returns terminals description
ncurses_meta	Enables/Disable 8-bit meta key information
ncurses_mouseinterval	Set timeout for mouse button clicks
ncurses_mousemask	Sets mouse options
ncurses_mouse_trafo	Transforms coordinates
ncurses_move	Move output position
ncurses_move_panel	Moves a panel so that its upper-left corner is at [startx, starty]
ncurses_mvaddch	Move current position and add character
ncurses_mvaddchnstr	Move position and add attributed string with specified length
ncurses_mvaddchstr	Move position and add attributed string
ncurses_mvaddnstr	Move position and add string with specified length
ncurses_mvaddstr	Move position and add string
ncurses_mvcur	Move cursor immediately
ncurses_mvdelch	Move position and delete character, shift rest of line left
ncurses_mvgetch	Move position and get character at new position
ncurses_mvhline	Set new position and draw a horizontal line using an attributed character and max. n characters long
ncurses_mvinch	Move position and get attributed character at new position
ncurses_mvvline	Set new position and draw a vertical line using an attributed character and max. n characters long
ncurses_mvwaddstr	Add string at new position in window
ncurses_napms	Sleep
ncurses_newpad	Creates a new pad (window)
ncurses_newwin	Create a new window
ncurses_new_panel	Create a new panel and associate it with window
ncurses_nl	Translate newline and carriage return / line feed
ncurses_nocbreak	Switch terminal to cooked mode
ncurses_noecho	Switch off keyboard input echo
ncurses_nonl	Do not translate newline and carriage return / line feed
ncurses_noqiflush	Do not flush on signal characters
ncurses_noraw	Switch terminal out of raw mode
ncurses_pair_content	Retrieves foreground and background colors of a color pair
ncurses_panel_above	Returns the panel above panel
ncurses_panel_below	Returns the panel below panel
ncurses_panel_window	Returns the window associated with panel
ncurses_pnoutrefresh	Copies a region from a pad into the virtual screen
ncurses_prefresh	Copies a region from a pad into the virtual screen
ncurses_putp	Apply padding information to the string and output it
ncurses_qiflush	Flush on signal characters
ncurses_raw	Switch terminal into raw mode
ncurses_refresh	Refresh screen
ncurses_replace_panel	Replaces the window associated with panel
ncurses_resetty	Restores saved terminal state
ncurses_reset_prog_mode	Resets the prog mode saved by def_prog_mode
ncurses_reset_shell_mode	Resets the shell mode saved by def_shell_mode
ncurses_savetty	Saves terminal state
ncurses_scrl	Scroll window content up or down without changing current position
ncurses_scr_dump	Dump screen content to file
ncurses_scr_init	Initialize screen from file dump
ncurses_scr_restore	Restore screen from file dump
ncurses_scr_set	Inherit screen from file dump
ncurses_show_panel	Places an invisible panel on top of the stack, making it visible
ncurses_slk_attr	Returns current soft label key attribute
ncurses_slk_attroff	Turn off the given attributes for soft function-key labels
ncurses_slk_attron	Turn on the given attributes for soft function-key labels
ncurses_slk_attrset	Set given attributes for soft function-key labels
ncurses_slk_clear	Clears soft labels from screen
ncurses_slk_color	Sets color for soft label keys
ncurses_slk_init	Initializes soft label key functions
ncurses_slk_noutrefresh	Copies soft label keys to virtual screen
ncurses_slk_refresh	Copies soft label keys to screen
ncurses_slk_restore	Restores soft label keys
ncurses_slk_set	Sets function key labels
ncurses_slk_touch	Forces output when ncurses_slk_noutrefresh is performed
ncurses_standend	Stop using ‘standout’ attribute
ncurses_standout	Start using ‘standout’ attribute
ncurses_start_color	Initializes color functionality
ncurses_termattrs	Returns a logical OR of all attribute flags supported by terminal
ncurses_termname	Returns terminals (short)-name
ncurses_timeout	Set timeout for special key sequences
ncurses_top_panel	Moves a visible panel to the top of the stack
ncurses_typeahead	Specify different filedescriptor for typeahead checking
ncurses_ungetch	Put a character back into the input stream
ncurses_ungetmouse	Pushes mouse event to queue
ncurses_update_panels	Refreshes the virtual screen to reflect the relations between panels in the stack
ncurses_use_default_colors	Assign terminal default colors to color id -1
ncurses_use_env	Control use of environment information about terminal size
ncurses_use_extended_names	Control use of extended names in terminfo descriptions
ncurses_vidattr	Display the string on the terminal in the video attribute mode
ncurses_vline	Draw a vertical line at current position using an attributed character and max. n characters long
ncurses_waddch	Adds character at current position in a window and advance cursor
ncurses_waddstr	Outputs text at current postion in window
ncurses_wattroff	Turns off attributes for a window
ncurses_wattron	Turns on attributes for a window
ncurses_wattrset	Set the attributes for a window
ncurses_wborder	Draws a border around the window using attributed characters
ncurses_wclear	Clears window
ncurses_wcolor_set	Sets windows color pairings
ncurses_werase	Erase window contents
ncurses_wgetch	Reads a character from keyboard (window)
ncurses_whline	Draws a horizontal line in a window at current position using an attributed character and max. n characters long
ncurses_wmouse_trafo	Transforms window/stdscr coordinates
ncurses_wmove	Moves windows output position
ncurses_wnoutrefresh	Copies window to virtual screen
ncurses_wrefresh	Refresh window on terminal screen
ncurses_wstandend	End standout mode for a window
ncurses_wstandout	Enter standout mode for a window
ncurses_wvline	Draws a vertical line in a window at current position using an attributed character and max. n characters long
newt_bell	Send a beep to the terminal
newt_button	Create a new button
newt_button_bar	This function returns a grid containing the buttons created.
newt_centered_window	Open a centered window of the specified size
newt_checkbox	说明
newt_checkbox_get_value	Retreives value of checkox resource
newt_checkbox_set_flags	Configures checkbox resource
newt_checkbox_set_value	Sets the value of the checkbox
newt_checkbox_tree	说明
newt_checkbox_tree_add_item	Adds new item to the checkbox tree
newt_checkbox_tree_find_item	Finds an item in the checkbox tree
newt_checkbox_tree_get_current	Returns checkbox tree selected item
newt_checkbox_tree_get_entry_value	说明
newt_checkbox_tree_get_multi_selection	说明
newt_checkbox_tree_get_selection	说明
newt_checkbox_tree_multi	说明
newt_checkbox_tree_set_current	说明
newt_checkbox_tree_set_entry	说明
newt_checkbox_tree_set_entry_value	说明
newt_checkbox_tree_set_width	说明
newt_clear_key_buffer	Discards the contents of the terminal’s input buffer without waiting for additional input
newt_cls	说明
newt_compact_button	说明
newt_component_add_callback	说明
newt_component_takes_focus	说明
newt_create_grid	说明
newt_cursor_off	说明
newt_cursor_on	说明
newt_delay	说明
newt_draw_form	说明
newt_draw_root_text	Displays the string text at the position indicated
newt_entry	说明
newt_entry_get_value	说明
newt_entry_set	说明
newt_entry_set_filter	说明
newt_entry_set_flags	说明
newt_finished	Uninitializes newt interface
newt_form	Create a form
newt_form_add_component	Adds a single component to the form
newt_form_add_components	Add several components to the form
newt_form_add_hot_key	说明
newt_form_destroy	Destroys a form
newt_form_get_current	说明
newt_form_run	Runs a form
newt_form_set_background	说明
newt_form_set_height	说明
newt_form_set_size	说明
newt_form_set_timer	说明
newt_form_set_width	说明
newt_form_watch_fd	说明
newt_get_screen_size	Fills in the passed references with the current size of the terminal
newt_grid_add_components_to_form	说明
newt_grid_basic_window	说明
newt_grid_free	说明
newt_grid_get_size	说明
newt_grid_h_close_stacked	说明
newt_grid_h_stacked	说明
newt_grid_place	说明
newt_grid_set_field	说明
newt_grid_simple_window	说明
newt_grid_v_close_stacked	说明
newt_grid_v_stacked	说明
newt_grid_wrapped_window	说明
newt_grid_wrapped_window_at	说明
newt_init	Initialize newt
newt_label	说明
newt_label_set_text	说明
newt_listbox	说明
newt_listbox_append_entry	说明
newt_listbox_clear	说明
newt_listbox_clear_selection	说明
newt_listbox_delete_entry	说明
newt_listbox_get_current	说明
newt_listbox_get_selection	说明
newt_listbox_insert_entry	说明
newt_listbox_item_count	说明
newt_listbox_select_item	说明
newt_listbox_set_current	说明
newt_listbox_set_current_by_key	说明
newt_listbox_set_data	说明
newt_listbox_set_entry	说明
newt_listbox_set_width	说明
newt_listitem	说明
newt_listitem_get_data	说明
newt_listitem_set	说明
newt_open_window	Open a window of the specified size and position
newt_pop_help_line	Replaces the current help line with the one from the stack
newt_pop_window	Removes the top window from the display
newt_push_help_line	Saves the current help line on a stack, and displays the new line
newt_radiobutton	说明
newt_radio_get_current	说明
newt_redraw_help_line	说明
newt_reflow_text	说明
newt_refresh	Updates modified portions of the screen
newt_resize_screen	说明
newt_resume	Resume using the newt interface after calling newt_suspend
newt_run_form	Runs a form
newt_scale	说明
newt_scale_set	说明
newt_scrollbar_set	说明
newt_set_help_callback	说明
newt_set_suspend_callback	Set a callback function which gets invoked when user presses the suspend key
newt_suspend	Tells newt to return the terminal to its initial state
newt_textbox	说明
newt_textbox_get_num_lines	说明
newt_textbox_reflowed	说明
newt_textbox_set_height	说明
newt_textbox_set_text	说明
newt_vertical_scrollbar	说明
newt_wait_for_key	Doesn’t return until a key has been pressed
newt_win_choice	说明
newt_win_entries	说明
newt_win_menu	说明
newt_win_message	说明
newt_win_messagev	说明
newt_win_ternary	说明
next	将数组中的内部指针向前移动一位
ngettext	Plural version of gettext
nl2br	在字符串所有新行之前插入 HTML 换行标记
nl_langinfo	Query language and locale information
nsapi_request_headers	Fetch all HTTP request headers
nsapi_response_headers	Fetch all HTTP response headers
nsapi_virtual	Perform an NSAPI sub-request
nthmac	Obtain a nthmac key (needs 2 arguments)
number_format	以千位分隔符方式格式化一个数字

o

函数	说明
oauth_get_sbs	生成一个签名字符基串
oauth_urlencode	将 URI 编码为 RFC 3986 规范
ob_clean	清空（擦掉）输出缓冲区
ob_deflatehandler	Deflate output handler
ob_end_clean	清空（擦除）缓冲区并关闭输出缓冲
ob_end_flush	冲刷出（送出）输出缓冲区内容并关闭缓冲
ob_etaghandler	ETag output handler
ob_flush	冲刷出（送出）输出缓冲区中的内容
ob_get_clean	得到当前缓冲区的内容并删除当前输出缓。
ob_get_contents	返回输出缓冲区的内容
ob_get_flush	刷出（送出）缓冲区内容，以字符串形式返回内容，并关闭输出缓冲区。
ob_get_length	返回输出缓冲区内容的长度
ob_get_level	返回输出缓冲机制的嵌套级别
ob_get_status	得到所有输出缓冲区的状态
ob_gzhandler	在ob_start中使用的用来压缩输出缓冲区中内容的回调函数。ob_start callback function to gzip output buffer
ob_iconv_handler	以输出缓冲处理程序转换字符编码
ob_implicit_flush	打开/关闭绝对刷送
ob_inflatehandler	Inflate output handler
ob_list_handlers	列出所有使用中的输出处理程序。
ob_start	打开输出控制缓冲
ob_tidyhandler	ob_start callback function to repair the buffer
ocibindbyname	别名 oci_bind_by_name
ocicancel	别名 oci_cancel
ocicolumnisnull	别名 oci_field_is_null
ocicolumnname	别名 oci_field_name
ocicolumnprecision	别名 oci_field_precision
ocicolumnscale	别名 oci_field_scale
ocicolumnsize	别名 oci_field_size
ocicolumntype	别名 oci_field_type
ocicolumntyperaw	别名 oci_field_type_raw
ocicommit	别名 oci_commit
ocidefinebyname	别名 oci_define_by_name
ocierror	别名 oci_error
ociexecute	别名 oci_execute
ocifetch	别名 oci_fetch
ocifetchinto	Obsolete variant of oci_fetch_array, oci_fetch_object, oci_fetch_assoc and oci_fetch_row
ocifetchstatement	别名 oci_fetch_all
ocifreecursor	别名 oci_free_statement
ocifreestatement	别名 oci_free_statement
ociinternaldebug	别名 oci_internal_debug
ocilogoff	别名 oci_close
ocilogon	别名 oci_connect
ocinewcollection	别名 oci_new_collection
ocinewcursor	别名 oci_new_cursor
ocinewdescriptor	别名 oci_new_descriptor
ocinlogon	别名 oci_new_connect
ocinumcols	别名 oci_num_fields
ociparse	别名 oci_parse
ociplogon	别名 oci_pconnect
ociresult	别名 oci_result
ocirollback	别名 oci_rollback
ocirowcount	别名 oci_num_rows
ociserverversion	别名 oci_server_version
ocisetprefetch	别名 oci_set_prefetch
ocistatementtype	别名 oci_statement_type
oci_bind_array_by_name	Binds a PHP array to an Oracle PL/SQL array parameter
oci_bind_by_name	绑定一个 PHP 变量到一个 Oracle 位置标志符
oci_cancel	中断游标读取数据
oci_client_version	Returns the Oracle client library version
oci_close	关闭 Oracle 连接
oci_commit	提交未执行的事务处理
oci_connect	建立一个到 Oracle 服务器的连接
oci_define_by_name	在 SELECT 中使用 PHP 变量作为定义的步骤
oci_error	返回上一个错误
oci_execute	执行一条语句
oci_fetch	Fetches the next row into result-buffer
oci_fetch_all	获取结果数据的所有行到一个数组
oci_fetch_array	Returns the next row from a query as an associative or numeric array
oci_fetch_assoc	Returns the next row from a query as an associative array
oci_fetch_object	Returns the next row from a query as an object
oci_fetch_row	Returns the next row from a query as a numeric array
oci_field_is_null	检查字段是否为 NULL
oci_field_name	返回字段名
oci_field_precision	返回字段精度
oci_field_scale	返回字段范围
oci_field_size	返回字段大小
oci_field_type	返回字段的数据类型
oci_field_type_raw	返回字段的原始 Oracle 数据类型
oci_free_descriptor	Frees a descriptor
oci_free_statement	释放关联于语句或游标的所有资源
oci_get_implicit_resultset	Returns the next child statement resource from a parent statement resource that has Oracle Database 12c Implicit Result Sets
oci_internal_debug	打开或关闭内部调试输出
oci_lob_copy	Copies large object
oci_lob_is_equal	Compares two LOB/FILE locators for equality
oci_new_collection	分配新的 collection 对象
oci_new_connect	建定一个到 Oracle 服务器的新连接
oci_new_cursor	分配并返回一个新的游标（语句句柄）
oci_new_descriptor	初始化一个新的空 LOB 或 FILE 描述符
oci_num_fields	返回结果列的数目
oci_num_rows	返回语句执行后受影响的行数
oci_parse	配置 Oracle 语句预备执行
oci_password_change	修改 Oracle 用户的密码
oci_pconnect	使用一个持久连接连到 Oracle 数据库
oci_result	返回所取得行中字段的值
oci_rollback	回滚未提交的事务
oci_server_version	返回服务器版本信息
oci_set_action	Sets the action name
oci_set_client_identifier	Sets the client identifier
oci_set_client_info	Sets the client information
oci_set_edition	Sets the database edition
oci_set_module_name	Sets the module name
oci_set_prefetch	设置预提取行数
oci_statement_type	返回 OCI 语句的类型
octdec	八进制转换为十进制
odbc_autocommit	Toggle autocommit behaviour
odbc_binmode	Handling of binary column data
odbc_close	Close an ODBC connection
odbc_close_all	Close all ODBC connections
odbc_columnprivileges	Lists columns and associated privileges for the given table
odbc_columns	Lists the column names in specified tables
odbc_commit	Commit an ODBC transaction
odbc_connect	Connect to a datasource
odbc_cursor	Get cursorname
odbc_data_source	Returns information about a current connection
odbc_do	别名 odbc_exec
odbc_error	Get the last error code
odbc_errormsg	Get the last error message
odbc_exec	Prepare and execute an SQL statement
odbc_execute	Execute a prepared statement
odbc_fetch_array	Fetch a result row as an associative array
odbc_fetch_into	Fetch one result row into array
odbc_fetch_object	Fetch a result row as an object
odbc_fetch_row	Fetch a row
odbc_field_len	Get the length (precision) of a field
odbc_field_name	Get the columnname
odbc_field_num	Return column number
odbc_field_precision	别名 odbc_field_len
odbc_field_scale	Get the scale of a field
odbc_field_type	Datatype of a field
odbc_foreignkeys	Retrieves a list of foreign keys
odbc_free_result	Free resources associated with a result
odbc_gettypeinfo	Retrieves information about data types supported by the data source
odbc_longreadlen	Handling of LONG columns
odbc_next_result	Checks if multiple results are available
odbc_num_fields	Number of columns in a result
odbc_num_rows	Number of rows in a result
odbc_pconnect	Open a persistent database connection
odbc_prepare	Prepares a statement for execution
odbc_primarykeys	Gets the primary keys for a table
odbc_procedurecolumns	Retrieve information about parameters to procedures
odbc_procedures	Get the list of procedures stored in a specific data source
odbc_result	Get result data
odbc_result_all	Print result as HTML table
odbc_rollback	Rollback a transaction
odbc_setoption	Adjust ODBC settings
odbc_specialcolumns	Retrieves special columns
odbc_statistics	Retrieve statistics about a table
odbc_tableprivileges	Lists tables and the privileges associated with each table
odbc_tables	Get the list of table names stored in a specific data source
opcache_compile_file	无需运行，即可编译并缓存 PHP 脚本
opcache_get_configuration	获取缓存的配置信息
opcache_get_status	获取缓存的状态信息
opcache_invalidate	废除脚本缓存
opcache_is_script_cached	Tells whether a script is cached in OPCache
opcache_reset	重置字节码缓存的内容
openal_buffer_create	Generate OpenAL buffer
openal_buffer_data	Load a buffer with data
openal_buffer_destroy	Destroys an OpenAL buffer
openal_buffer_get	Retrieve an OpenAL buffer property
openal_buffer_loadwav	Load a .wav file into a buffer
openal_context_create	Create an audio processing context
openal_context_current	Make the specified context current
openal_context_destroy	Destroys a context
openal_context_process	Process the specified context
openal_context_suspend	Suspend the specified context
openal_device_close	Close an OpenAL device
openal_device_open	Initialize the OpenAL audio layer
openal_listener_get	Retrieve a listener property
openal_listener_set	Set a listener property
openal_source_create	Generate a source resource
openal_source_destroy	Destroy a source resource
openal_source_get	Retrieve an OpenAL source property
openal_source_pause	Pause the source
openal_source_play	Start playing the source
openal_source_rewind	Rewind the source
openal_source_set	Set source property
openal_source_stop	Stop playing the source
openal_stream	Begin streaming on a source
opendir	打开目录句柄
openlog	Open connection to system logger
openssl_cipher_iv_length	Gets the cipher iv length
openssl_csr_export	Exports a CSR as a string
openssl_csr_export_to_file	Exports a CSR to a file
openssl_csr_get_public_key	Returns the public key of a CERT
openssl_csr_get_subject	Returns the subject of a CERT
openssl_csr_new	Generates a CSR
openssl_csr_sign	Sign a CSR with another certificate (or itself) and generate a certificate
openssl_decrypt	Decrypts data
openssl_dh_compute_key	Computes shared secret for public value of remote DH key and local DH key
openssl_digest	Computes a digest
openssl_encrypt	Encrypts data
openssl_error_string	Return openSSL error message
openssl_free_key	Free key resource
openssl_get_cert_locations	Retrieve the available certificate locations
openssl_get_cipher_methods	Gets available cipher methods
openssl_get_md_methods	Gets available digest methods
openssl_get_privatekey	别名 openssl_pkey_get_private
openssl_get_publickey	别名 openssl_pkey_get_public
openssl_open	Open sealed data
openssl_pbkdf2	Generates a PKCS5 v2 PBKDF2 string, defaults to SHA-1
openssl_pkcs7_decrypt	Decrypts an S/MIME encrypted message
openssl_pkcs7_encrypt	Encrypt an S/MIME message
openssl_pkcs7_sign	Sign an S/MIME message
openssl_pkcs7_verify	Verifies the signature of an S/MIME signed message
openssl_pkcs12_export	Exports a PKCS#12 Compatible Certificate Store File to variable.
openssl_pkcs12_export_to_file	Exports a PKCS#12 Compatible Certificate Store File
openssl_pkcs12_read	Parse a PKCS#12 Certificate Store into an array
openssl_pkey_export	Gets an exportable representation of a key into a string
openssl_pkey_export_to_file	Gets an exportable representation of a key into a file
openssl_pkey_free	Frees a private key
openssl_pkey_get_details	Returns an array with the key details
openssl_pkey_get_private	Get a private key
openssl_pkey_get_public	Extract public key from certificate and prepare it for use
openssl_pkey_new	Generates a new private key
openssl_private_decrypt	Decrypts data with private key
openssl_private_encrypt	Encrypts data with private key
openssl_public_decrypt	Decrypts data with public key
openssl_public_encrypt	Encrypts data with public key
openssl_random_pseudo_bytes	Generate a pseudo-random string of bytes
openssl_seal	Seal (encrypt) data
openssl_sign	Generate signature
openssl_spki_export	Exports a valid PEM formatted public key signed public key and challenge
openssl_spki_export_challenge	Exports the challenge assoicated with a signed public key and challenge
openssl_spki_new	Generate a new signed public key and challenge
openssl_spki_verify	Verifies a signed public key and challenge
openssl_verify	Verify signature
openssl_x509_checkpurpose	Verifies if a certificate can be used for a particular purpose
openssl_x509_check_private_key	Checks if a private key corresponds to a certificate
openssl_x509_export	Exports a certificate as a string
openssl_x509_export_to_file	Exports a certificate to file
openssl_x509_fingerprint	Calculates the fingerprint, or digest, of a given X.509 certificate
openssl_x509_free	Free certificate resource
openssl_x509_parse	Parse an X509 certificate and return the information as an array
openssl_x509_read	Parse an X.509 certificate and return a resource identifier for it
ord	返回字符的 ASCII 码值
output_add_rewrite_var	添加URL重写器的值（Add URL rewriter values）
output_reset_rewrite_vars	重设URL重写器的值（Reset URL rewriter values）
override_function	Overrides built-in functions

p

函数	说明
pack	Pack data into binary string
parsekit_compile_file	Compile a PHP file and return the resulting op array
parsekit_compile_string	Compile a string of PHP code and return the resulting op array
parsekit_func_arginfo	Return information regarding function argument(s)
parse_ini_file	解析一个配置文件
parse_ini_string	Parse a configuration string
parse_str	将字符串解析成多个变量
parse_url	解析 URL，返回其组成部分
passthru	执行外部程序并且显示原始输出
password_get_info	Returns information about the given hash
password_hash	Creates a password hash
password_needs_rehash	Checks if the given hash matches the given options
password_verify	Verifies that a password matches a hash
pathinfo	返回文件路径的信息
pclose	关闭进程文件指针
pcntl_alarm	为进程设置一个alarm闹钟信号
pcntl_errno	别名 pcntl_strerror
pcntl_exec	在当前进程空间执行指定程序
pcntl_fork	在当前进程当前位置产生分支（子进程）。译注：fork是创建了一个子进程，父进程和子进程 都从fork的位置开始向下继续执行，不同的是父进程执行过程中，得到的fork返回值为子进程 号，而子进程得到的是0。
pcntl_getpriority	获取任意进程的优先级
pcntl_get_last_error	Retrieve the error number set by the last pcntl function which failed
pcntl_setpriority	修改任意进程的优先级
pcntl_signal	安装一个信号处理器
pcntl_signal_dispatch	调用等待信号的处理器
pcntl_sigprocmask	设置或检索阻塞信号
pcntl_sigtimedwait	带超时机制的信号等待
pcntl_sigwaitinfo	等待信号
pcntl_strerror	Retrieve the system error message associated with the given errno
pcntl_wait	等待或返回fork的子进程状态
pcntl_waitpid	等待或返回fork的子进程状态
pcntl_wexitstatus	返回一个中断的子进程的返回代码
pcntl_wifexited	检查状态代码是否代表一个正常的退出。
pcntl_wifsignaled	检查子进程状态码是否代表由于某个信号而中断
pcntl_wifstopped	检查子进程当前是否已经停止
pcntl_wstopsig	返回导致子进程停止的信号
pcntl_wtermsig	返回导致子进程中断的信号
PDF_activate_item	Activate structure element or other content item
PDF_add_annotation	Add annotation [deprecated]
PDF_add_bookmark	Add bookmark for current page [deprecated]
PDF_add_launchlink	Add launch annotation for current page [deprecated]
PDF_add_locallink	Add link annotation for current page [deprecated]
PDF_add_nameddest	Create named destination
PDF_add_note	Set annotation for current page [deprecated]
PDF_add_outline	Add bookmark for current page [deprecated]
PDF_add_pdflink	Add file link annotation for current page [deprecated]
PDF_add_table_cell	Add a cell to a new or existing table
PDF_add_textflow	Create Textflow or add text to existing Textflow
PDF_add_thumbnail	Add thumbnail for current page
PDF_add_weblink	Add weblink for current page [deprecated]
PDF_arc	Draw a counterclockwise circular arc segment
PDF_arcn	Draw a clockwise circular arc segment
PDF_attach_file	Add file attachment for current page [deprecated]
PDF_begin_document	Create new PDF file
PDF_begin_font	Start a Type 3 font definition
PDF_begin_glyph	Start glyph definition for Type 3 font
PDF_begin_item	Open structure element or other content item
PDF_begin_layer	Start layer
PDF_begin_page	Start new page [deprecated]
PDF_begin_page_ext	Start new page
PDF_begin_pattern	Start pattern definition
PDF_begin_template	Start template definition [deprecated]
PDF_begin_template_ext	Start template definition
PDF_circle	Draw a circle
PDF_clip	Clip to current path
PDF_close	Close pdf resource [deprecated]
PDF_closepath	Close current path
PDF_closepath_fill_stroke	Close, fill and stroke current path
PDF_closepath_stroke	Close and stroke path
PDF_close_image	Close image
PDF_close_pdi	Close the input PDF document [deprecated]
PDF_close_pdi_page	Close the page handle
PDF_concat	Concatenate a matrix to the CTM
PDF_continue_text	Output text in next line
PDF_create_3dview	Create 3D view
PDF_create_action	Create action for objects or events
PDF_create_annotation	Create rectangular annotation
PDF_create_bookmark	Create bookmark
PDF_create_field	Create form field
PDF_create_fieldgroup	Create form field group
PDF_create_gstate	Create graphics state object
PDF_create_pvf	Create PDFlib virtual file
PDF_create_textflow	Create textflow object
PDF_curveto	Draw Bezier curve
PDF_define_layer	Create layer definition
PDF_delete	Delete PDFlib object
PDF_delete_pvf	Delete PDFlib virtual file
PDF_delete_table	Delete table object
PDF_delete_textflow	Delete textflow object
PDF_encoding_set_char	Add glyph name and/or Unicode value
PDF_endpath	End current path
PDF_end_document	Close PDF file
PDF_end_font	Terminate Type 3 font definition
PDF_end_glyph	Terminate glyph definition for Type 3 font
PDF_end_item	Close structure element or other content item
PDF_end_layer	Deactivate all active layers
PDF_end_page	Finish page
PDF_end_page_ext	Finish page
PDF_end_pattern	Finish pattern
PDF_end_template	Finish template
PDF_fill	Fill current path
PDF_fill_imageblock	Fill image block with variable data
PDF_fill_pdfblock	Fill PDF block with variable data
PDF_fill_stroke	Fill and stroke path
PDF_fill_textblock	Fill text block with variable data
PDF_findfont	Prepare font for later use [deprecated]
PDF_fit_image	Place image or template
PDF_fit_pdi_page	Place imported PDF page
PDF_fit_table	Place table on page
PDF_fit_textflow	Format textflow in rectangular area
PDF_fit_textline	Place single line of text
PDF_get_apiname	Get name of unsuccessfull API function
PDF_get_buffer	Get PDF output buffer
PDF_get_errmsg	Get error text
PDF_get_errnum	Get error number
PDF_get_font	Get font [deprecated]
PDF_get_fontname	Get font name [deprecated]
PDF_get_fontsize	Font handling [deprecated]
PDF_get_image_height	Get image height [deprecated]
PDF_get_image_width	Get image width [deprecated]
PDF_get_majorversion	Get major version number [deprecated]
PDF_get_minorversion	Get minor version number [deprecated]
PDF_get_parameter	Get string parameter
PDF_get_pdi_parameter	Get PDI string parameter [deprecated]
PDF_get_pdi_value	Get PDI numerical parameter [deprecated]
PDF_get_value	Get numerical parameter
PDF_info_font	Query detailed information about a loaded font
PDF_info_matchbox	Query matchbox information
PDF_info_table	Retrieve table information
PDF_info_textflow	Query textflow state
PDF_info_textline	Perform textline formatting and query metrics
PDF_initgraphics	Reset graphic state
PDF_lineto	Draw a line
PDF_load_3ddata	Load 3D model
PDF_load_font	Search and prepare font
PDF_load_iccprofile	Search and prepare ICC profile
PDF_load_image	Open image file
PDF_makespotcolor	Make spot color
PDF_moveto	Set current point
PDF_new	Create PDFlib object
PDF_open_ccitt	Open raw CCITT image [deprecated]
PDF_open_file	Create PDF file [deprecated]
PDF_open_gif	Open GIF image [deprecated]
PDF_open_image	Use image data [deprecated]
PDF_open_image_file	Read image from file [deprecated]
PDF_open_jpeg	Open JPEG image [deprecated]
PDF_open_memory_image	Open image created with PHP’s image functions [not supported]
PDF_open_pdi	Open PDF file [deprecated]
PDF_open_pdi_document	Prepare a pdi document
PDF_open_pdi_page	Prepare a page
PDF_open_tiff	Open TIFF image [deprecated]
PDF_pcos_get_number	Get value of pCOS path with type number or boolean
PDF_pcos_get_stream	Get contents of pCOS path with type stream, fstream, or string
PDF_pcos_get_string	Get value of pCOS path with type name, string, or boolean
PDF_place_image	Place image on the page [deprecated]
PDF_place_pdi_page	Place PDF page [deprecated]
PDF_process_pdi	Process imported PDF document
PDF_rect	Draw rectangle
PDF_restore	Restore graphics state
PDF_resume_page	Resume page
PDF_rotate	Rotate coordinate system
PDF_save	Save graphics state
PDF_scale	Scale coordinate system
PDF_setcolor	Set fill and stroke color
PDF_setdash	Set simple dash pattern
PDF_setdashpattern	Set dash pattern
PDF_setflat	Set flatness
PDF_setfont	Set font
PDF_setgray	Set color to gray [deprecated]
PDF_setgray_fill	Set fill color to gray [deprecated]
PDF_setgray_stroke	Set stroke color to gray [deprecated]
PDF_setlinecap	Set linecap parameter
PDF_setlinejoin	Set linejoin parameter
PDF_setlinewidth	Set line width
PDF_setmatrix	Set current transformation matrix
PDF_setmiterlimit	Set miter limit
PDF_setpolydash	Set complicated dash pattern [deprecated]
PDF_setrgbcolor	Set fill and stroke rgb color values [deprecated]
PDF_setrgbcolor_fill	Set fill rgb color values [deprecated]
PDF_setrgbcolor_stroke	Set stroke rgb color values [deprecated]
PDF_set_border_color	Set border color of annotations [deprecated]
PDF_set_border_dash	Set border dash style of annotations [deprecated]
PDF_set_border_style	Set border style of annotations [deprecated]
PDF_set_char_spacing	Set character spacing [deprecated]
PDF_set_duration	Set duration between pages [deprecated]
PDF_set_gstate	Activate graphics state object
PDF_set_horiz_scaling	Set horizontal text scaling [deprecated]
PDF_set_info	Fill document info field
PDF_set_info_author	Fill the author document info field [deprecated]
PDF_set_info_creator	Fill the creator document info field [deprecated]
PDF_set_info_keywords	Fill the keywords document info field [deprecated]
PDF_set_info_subject	Fill the subject document info field [deprecated]
PDF_set_info_title	Fill the title document info field [deprecated]
PDF_set_layer_dependency	Define relationships among layers
PDF_set_leading	Set distance between text lines [deprecated]
PDF_set_parameter	Set string parameter
PDF_set_text_matrix	Set text matrix [deprecated]
PDF_set_text_pos	Set text position
PDF_set_text_rendering	Determine text rendering [deprecated]
PDF_set_text_rise	Set text rise [deprecated]
PDF_set_value	Set numerical parameter
PDF_set_word_spacing	Set spacing between words [deprecated]
PDF_shading	Define blend
PDF_shading_pattern	Define shading pattern
PDF_shfill	Fill area with shading
PDF_show	Output text at current position
PDF_show_boxed	Output text in a box [deprecated]
PDF_show_xy	Output text at given position
PDF_skew	Skew the coordinate system
PDF_stringwidth	Return width of text
PDF_stroke	Stroke path
PDF_suspend_page	Suspend page
PDF_translate	Set origin of coordinate system
PDF_utf8_to_utf16	Convert string from UTF-8 to UTF-16
PDF_utf16_to_utf8	Convert string from UTF-16 to UTF-8
PDF_utf32_to_utf16	Convert string from UTF-32 to UTF-16
PDO_4D DSN	Connecting to 4D SQL server
PDO_CUBRID DSN	Connecting to CUBRID databases
PDO_DBLIB DSN	Connecting to Microsoft SQL Server and Sybase databases
PDO_FIREBIRD DSN	Connecting to Firebird databases
PDO_IBM DSN	Connecting to IBM databases
PDO_INFORMIX DSN	Connecting to Informix databases
PDO_MYSQL DSN	Connecting to MySQL databases
PDO_OCI DSN	Connecting to Oracle databases
PDO_ODBC DSN	Connecting to ODBC or DB2 databases
PDO_PGSQL DSN	Connecting to PostgreSQL databases
PDO_SQLITE DSN	Connecting to SQLite databases
PDO_SQLSRV DSN	Connecting to MS SQL Server and SQL Azure databases
pfsockopen	打开一个持久的网络连接或者Unix套接字连接。
pg_affected_rows	返回受影响的记录数目
pg_cancel_query	取消异步查询
pg_client_encoding	取得客户端编码方式
pg_close	关闭一个 PostgreSQL 连接
pg_connect	打开一个 PostgreSQL 连接
pg_connection_busy	获知连接是否为忙
pg_connection_reset	重置连接（再次连接）
pg_connection_status	获得连接状态
pg_connect_poll	Poll the status of an in-progress asynchronous PostgreSQL connection attempt.
pg_consume_input	Reads input on the connection
pg_convert	将关联的数组值转换为适合 SQL 语句的格式。
pg_copy_from	根据数组将记录插入表中
pg_copy_to	将一个表拷贝到数组中
pg_dbname	获得数据库名
pg_delete	删除记录
pg_end_copy	与 PostgreSQL 后端同步
pg_escape_bytea	转义 bytea 类型的二进制数据
pg_escape_identifier	Escape a identifier for insertion into a text field
pg_escape_literal	Escape a literal for insertion into a text field
pg_escape_string	转义 text/char 类型的字符串
pg_execute	Sends a request to execute a prepared statement with given parameters, and waits for the result.
pg_fetch_all	从结果中提取所有行作为一个数组
pg_fetch_all_columns	Fetches all rows in a particular result column as an array
pg_fetch_array	提取一行作为数组
pg_fetch_assoc	提取一行作为关联数组
pg_fetch_object	提取一行作为对象
pg_fetch_result	从结果资源中返回值
pg_fetch_row	提取一行作为枚举数组
pg_field_is_null	测试字段是否为 NULL
pg_field_name	返回字段的名字
pg_field_num	返回字段的编号
pg_field_prtlen	返回打印出来的长度
pg_field_size	返回指定字段占用内部存储空间的大小
pg_field_table	Returns the name or oid of the tables field
pg_field_type	返回相应字段的类型名称
pg_field_type_oid	Returns the type ID (OID) for the corresponding field number
pg_flush	Flush outbound query data on the connection
pg_free_result	释放查询结果占用的内存
pg_get_notify	Ping 数据库连接
pg_get_pid	Ping 数据库连接
pg_get_result	取得异步查询结果
pg_host	返回和某连接关联的主机名
pg_insert	将数组插入到表中
pg_last_error	得到某连接的最后一条错误信息
pg_last_notice	返回 PostgreSQL 服务器最新一条公告信息
pg_last_oid	返回上一个对象的 oid
pg_lo_close	关闭一个大型对象
pg_lo_create	新建一个大型对象
pg_lo_export	将大型对象导出到文件
pg_lo_import	将文件导入为大型对象
pg_lo_open	打开一个大型对象
pg_lo_read	从大型对象中读入数据
pg_lo_read_all	读入整个大型对象并直接发送给浏览器
pg_lo_seek	移动大型对象中的指针
pg_lo_tell	返回大型对象的当前指针位置
pg_lo_truncate	Truncates a large object
pg_lo_unlink	删除一个大型对象
pg_lo_write	向大型对象写入数据
pg_meta_data	获得表的元数据
pg_num_fields	返回字段的数目
pg_num_rows	返回行的数目
pg_options	获得和连接有关的选项
pg_parameter_status	Looks up a current parameter setting of the server.
pg_pconnect	打开一个持久的 PostgreSQL 连接
pg_ping	Ping 数据库连接
pg_port	返回该连接的端口号
pg_prepare	Submits a request to create a prepared statement with the given parameters, and waits for completion.
pg_put_line	向 PostgreSQL 后端发送以 NULL 结尾的字符串
pg_query	执行查询
pg_query_params	Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text.
pg_result_error	获得查询结果的错误信息
pg_result_error_field	Returns an individual field of an error report.
pg_result_seek	在结果资源中设定内部行偏移量
pg_result_status	获得查询结果的状态
pg_select	选择记录
pg_send_execute	Sends a request to execute a prepared statement with given parameters, without waiting for the result(s).
pg_send_prepare	Sends a request to create a prepared statement with the given parameters, without waiting for completion.
pg_send_query	发送异步查询
pg_send_query_params	Submits a command and separate parameters to the server without waiting for the result(s).
pg_set_client_encoding	设定客户端编码
pg_set_error_verbosity	Determines the verbosity of messages returned by pg_last_error and pg_result_error.
pg_socket	Get a read only handle to the socket underlying a PostgreSQL connection
pg_trace	启动一个 PostgreSQL 连接的追踪功能
pg_transaction_status	Returns the current in-transaction status of the server.
pg_tty	返回该连接的 tty 号
pg_unescape_bytea	取消 bytea 类型中的字符串转义
pg_untrace	关闭 PostgreSQL 连接的追踪功能
pg_update	更新表
pg_version	Returns an array with client, protocol and server version (when available)
PharException	The PharException class provides a phar-specific exception class for try/catch blocks.
Phar 上下文（context）选项	Phar 上下文（context）选项列表
phpcredits	打印 PHP 贡献者名单
phpinfo	输出关于 PHP 配置的信息
phpversion	获取当前的PHP版本
php_check_syntax	检查PHP的语法（并执行）指定的文件
php_ini_loaded_file	取得已加载的 php.ini 文件的路径
php_ini_scanned_files	返回从额外 ini 目录里解析的 .ini 文件列表
php_logo_guid	获取 logo 的 guid
php_sapi_name	返回 web 服务器和 PHP 之间的接口类型
php_strip_whitespace	返回删除注释和空格后的PHP源码
php_uname	返回运行 PHP 的系统的有关信息
pi	得到圆周率值
png2wbmp	将 PNG 图像文件转换为 WBMP 图像文件
popen	打开进程文件指针
pos	current 的别名
posix_access	Determine accessibility of a file
posix_ctermid	Get path name of controlling terminal
posix_errno	别名 posix_get_last_error
posix_getcwd	Pathname of current directory
posix_getegid	Return the effective group ID of the current process
posix_geteuid	Return the effective user ID of the current process
posix_getgid	Return the real group ID of the current process
posix_getgrgid	Return info about a group by group id
posix_getgrnam	Return info about a group by name
posix_getgroups	Return the group set of the current process
posix_getlogin	Return login name
posix_getpgid	Get process group id for job control
posix_getpgrp	Return the current process group identifier
posix_getpid	返回当前进程 id
posix_getppid	Return the parent process identifier
posix_getpwnam	Return info about a user by username
posix_getpwuid	Return info about a user by user id
posix_getrlimit	Return info about system resource limits
posix_getsid	Get the current sid of the process
posix_getuid	Return the real user ID of the current process
posix_get_last_error	Retrieve the error number set by the last posix function that failed
posix_initgroups	Calculate the group access list
posix_isatty	Determine if a file descriptor is an interactive terminal
posix_kill	Send a signal to a process
posix_mkfifo	Create a fifo special file (a named pipe)
posix_mknod	Create a special or ordinary file (POSIX.1)
posix_setegid	Set the effective GID of the current process
posix_seteuid	Set the effective UID of the current process
posix_setgid	Set the GID of the current process
posix_setpgid	Set process group id for job control
posix_setrlimit	Set system resource limits
posix_setsid	Make the current process a session leader
posix_setuid	Set the UID of the current process
posix_strerror	Retrieve the system error message associated with the given errno
posix_times	Get process times
posix_ttyname	Determine terminal device name
posix_uname	Get system name
pow	指数表达式
preg_filter	执行一个正则表达式搜索和替换
preg_grep	返回匹配模式的数组条目
preg_last_error	返回最后一个PCRE正则执行产生的错误代码
preg_match	执行一个正则表达式匹配
preg_match_all	执行一个全局正则表达式匹配
preg_quote	转义正则表达式字符
preg_replace	执行一个正则表达式的搜索和替换
preg_replace_callback	执行一个正则表达式搜索并且使用一个回调进行替换
preg_replace_callback_array	Perform a regular expression search and replace using callbacks
preg_split	通过一个正则表达式分隔字符串
prev	将数组的内部指针倒回一位
print	输出字符串
printf	输出格式化字符串
print_r	打印关于变量的易于理解的信息。
proc_close	关闭由 proc_open 打开的进程并且返回进程退出码
proc_get_status	获取由 proc_open 函数打开的进程的信息
proc_nice	修改当前进程的优先级
proc_open	执行一个命令，并且打开用来输入/输出的文件指针。
proc_terminate	杀除由 proc_open 打开的进程
property_exists	检查对象或类是否具有该属性
pspell_add_to_personal	Add the word to a personal wordlist
pspell_add_to_session	Add the word to the wordlist in the current session
pspell_check	Check a word
pspell_clear_session	Clear the current session
pspell_config_create	Create a config used to open a dictionary
pspell_config_data_dir	location of language data files
pspell_config_dict_dir	Location of the main word list
pspell_config_ignore	Ignore words less than N characters long
pspell_config_mode	Change the mode number of suggestions returned
pspell_config_personal	Set a file that contains personal wordlist
pspell_config_repl	Set a file that contains replacement pairs
pspell_config_runtogether	Consider run-together words as valid compounds
pspell_config_save_repl	Determine whether to save a replacement pairs list along with the wordlist
pspell_new	Load a new dictionary
pspell_new_config	Load a new dictionary with settings based on a given config
pspell_new_personal	Load a new dictionary with personal wordlist
pspell_save_wordlist	Save the personal wordlist to a file
pspell_store_replacement	Store a replacement pair for a word
pspell_suggest	Suggest spellings of a word
ps_add_bookmark	Add bookmark to current page
ps_add_launchlink	Adds link which launches file
ps_add_locallink	Adds link to a page in the same document
ps_add_note	Adds note to current page
ps_add_pdflink	Adds link to a page in a second pdf document
ps_add_weblink	Adds link to a web location
ps_arc	Draws an arc counterclockwise
ps_arcn	Draws an arc clockwise
ps_begin_page	Start a new page
ps_begin_pattern	Start a new pattern
ps_begin_template	Start a new template
ps_circle	Draws a circle
ps_clip	Clips drawing to current path
ps_close	Closes a PostScript document
ps_closepath	Closes path
ps_closepath_stroke	Closes and strokes path
ps_close_image	Closes image and frees memory
ps_continue_text	Continue text in next line
ps_curveto	Draws a curve
ps_delete	Deletes all resources of a PostScript document
ps_end_page	End a page
ps_end_pattern	End a pattern
ps_end_template	End a template
ps_fill	Fills the current path
ps_fill_stroke	Fills and strokes the current path
ps_findfont	Loads a font
ps_get_buffer	Fetches the full buffer containig the generated PS data
ps_get_parameter	Gets certain parameters
ps_get_value	Gets certain values
ps_hyphenate	Hyphenates a word
ps_include_file	Reads an external file with raw PostScript code
ps_lineto	Draws a line
ps_makespotcolor	Create spot color
ps_moveto	Sets current point
ps_new	Creates a new PostScript document object
ps_open_file	Opens a file for output
ps_open_image	Reads an image for later placement
ps_open_image_file	Opens image from file
ps_open_memory_image	Takes an GD image and returns an image for placement in a PS document
ps_place_image	Places image on the page
ps_rect	Draws a rectangle
ps_restore	Restore previously save context
ps_rotate	Sets rotation factor
ps_save	Save current context
ps_scale	Sets scaling factor
ps_setcolor	Sets current color
ps_setdash	Sets appearance of a dashed line
ps_setflat	Sets flatness
ps_setfont	Sets font to use for following output
ps_setgray	Sets gray value
ps_setlinecap	Sets appearance of line ends
ps_setlinejoin	Sets how contected lines are joined
ps_setlinewidth	Sets width of a line
ps_setmiterlimit	Sets the miter limit
ps_setoverprintmode	Sets overprint mode
ps_setpolydash	Sets appearance of a dashed line
ps_set_border_color	Sets color of border for annotations
ps_set_border_dash	Sets length of dashes for border of annotations
ps_set_border_style	Sets border style of annotations
ps_set_info	Sets information fields of document
ps_set_parameter	Sets certain parameters
ps_set_text_pos	Sets position for text output
ps_set_value	Sets certain values
ps_shading	Creates a shading for later use
ps_shading_pattern	Creates a pattern based on a shading
ps_shfill	Fills an area with a shading
ps_show	Output text
ps_show2	Output a text at current position
ps_show_boxed	Output text in a box
ps_show_xy	Output text at given position
ps_show_xy2	Output text at position
ps_stringwidth	Gets width of a string
ps_string_geometry	Gets geometry of a string
ps_stroke	Draws the current path
ps_symbol	Output a glyph
ps_symbol_name	Gets name of a glyph
ps_symbol_width	Gets width of a glyph
ps_translate	Sets translation
putenv	设置环境变量的值
px_close	Closes a paradox database
px_create_fp	Create a new paradox database
px_date2string	Converts a date into a string.
px_delete	Deletes resource of paradox database
px_delete_record	Deletes record from paradox database
px_get_field	Returns the specification of a single field
px_get_info	Return lots of information about a paradox file
px_get_parameter	Gets a parameter
px_get_record	Returns record of paradox database
px_get_schema	Returns the database schema
px_get_value	Gets a value
px_insert_record	Inserts record into paradox database
px_new	Create a new paradox object
px_numfields	Returns number of fields in a database
px_numrecords	Returns number of records in a database
px_open_fp	Open paradox database
px_put_record	Stores record into paradox database
px_retrieve_record	Returns record of paradox database
px_set_blob_file	Sets the file where blobs are read from
px_set_parameter	Sets a parameter
px_set_tablename	Sets the name of a table (deprecated)
px_set_targetencoding	Sets the encoding for character fields (deprecated)
px_set_value	Sets a value
px_timestamp2string	Converts the timestamp into a string.
px_update_record	Updates record in paradox database

q

函数	说明
quoted_printable_decode	将 quoted-printable 字符串转换为 8-bit 字符串
quoted_printable_encode	将 8-bit 字符串转换成 quoted-printable 字符串
quotemeta	转义元字符集

r

函数	说明
rad2deg	将弧度数转换为相应的角度数
radius_acct_open	Creates a Radius handle for accounting
radius_add_server	Adds a server
radius_auth_open	Creates a Radius handle for authentication
radius_close	Frees all ressources
radius_config	Causes the library to read the given configuration file
radius_create_request	Create accounting or authentication request
radius_cvt_addr	Converts raw data to IP-Address
radius_cvt_int	Converts raw data to integer
radius_cvt_string	Converts raw data to string
radius_demangle	Demangles data
radius_demangle_mppe_key	Derives mppe-keys from mangled data
radius_get_attr	Extracts an attribute
radius_get_tagged_attr_data	Extracts the data from a tagged attribute
radius_get_tagged_attr_tag	Extracts the tag from a tagged attribute
radius_get_vendor_attr	Extracts a vendor specific attribute
radius_put_addr	Attaches an IP address attribute
radius_put_attr	Attaches a binary attribute
radius_put_int	Attaches an integer attribute
radius_put_string	Attaches a string attribute
radius_put_vendor_addr	Attaches a vendor specific IP address attribute
radius_put_vendor_attr	Attaches a vendor specific binary attribute
radius_put_vendor_int	Attaches a vendor specific integer attribute
radius_put_vendor_string	Attaches a vendor specific string attribute
radius_request_authenticator	Returns the request authenticator
radius_salt_encrypt_attr	Salt-encrypts a value
radius_send_request	Sends the request and waites for a reply
radius_server_secret	Returns the shared secret
radius_strerror	Returns an error message
rand	产生一个随机整数
random_bytes	Generates cryptographically secure pseudo-random bytes
random_int	Generates cryptographically secure pseudo-random integers
range	建立一个包含指定范围单元的数组
rar_wrapper_cache_stats	Cache hits and misses for the URL wrapper
rawurldecode	对已编码的 URL 字符串进行解码
rawurlencode	按照 RFC 3986 对 URL 进行编码
readdir	从目录句柄中读取条目
readfile	输出一个文件
readgzfile	Output a gz-file
readline	读取一行
readline_add_history	添加一行命令行历史记录
readline_callback_handler_install	初始化一个 readline 回调接口，然后终端输出提示信息并立即返回
readline_callback_handler_remove	移除上一个安装的回调函数句柄并且恢复终端设置
readline_callback_read_char	当一个行被接收时读取一个字符并且通知 readline 调用回调函数
readline_clear_history	清除历史
readline_completion_function	注册一个完成函数
readline_info	获取/设置readline内部的各个变量
readline_list_history	获取命令历史列表
readline_on_new_line	通知readline将光标移动到新行
readline_read_history	读取命令历史
readline_redisplay	重绘显示区
readline_write_history	写入历史记录
readlink	返回符号连接指向的目标
read_exif_data	别名 exif_read_data
realpath	返回规范化的绝对路径名
realpath_cache_get	Get realpath cache entries
realpath_cache_size	Get realpath cache size
recode	别名 recode_string
recode_file	Recode from file to file according to recode request
recode_string	Recode a string according to a recode request
register_shutdown_function	Register a function for execution on shutdown
register_tick_function	Register a function for execution on each tick
rename	重命名一个文件或目录
rename_function	Renames orig_name to new_name in the global function table
reset	将数组的内部指针指向第一个单元
restore_error_handler	还原之前的错误处理函数
restore_exception_handler	恢复之前定义过的异常处理函数。
restore_include_path	还原 include_path 配置选项的值
rewind	倒回文件指针的位置
rewinddir	倒回目录句柄
rmdir	删除目录
round	对浮点数进行四舍五入
rpm_close	Closes an RPM file
rpm_get_tag	Retrieves a header tag from an RPM file
rpm_is_valid	Tests a filename for validity as an RPM file
rpm_open	Opens an RPM file
rpm_version	Returns a string representing the current version of the rpmreader extension
rrdc_disconnect	Close any outstanding connection to rrd caching daemon
rrd_create	Creates rrd database file
rrd_error	Gets latest error message.
rrd_fetch	Fetch the data for graph as array.
rrd_first	Gets the timestamp of the first sample from rrd file.
rrd_graph	Creates image from a data.
rrd_info	Gets information about rrd file
rrd_last	Gets unix timestamp of the last sample.
rrd_lastupdate	Gets information about last updated data.
rrd_restore	Restores the RRD file from XML dump.
rrd_tune	Tunes some RRD database file header options.
rrd_update	Updates the RRD database.
rrd_version	Gets information about underlying rrdtool library
rrd_xport	Exports the information about RRD database.
rsort	对数组逆向排序
rtrim	删除字符串末端的空白字符（或者其他字符）
runkit_class_adopt	Convert a base class to an inherited class, add ancestral methods when appropriate
runkit_class_emancipate	Convert an inherited class to a base class, removes any method whose scope is ancestral
runkit_constant_add	Similar to define(), but allows defining in class definitions as well
runkit_constant_redefine	Redefine an already defined constant
runkit_constant_remove	Remove/Delete an already defined constant
runkit_function_add	Add a new function, similar to create_function
runkit_function_copy	Copy a function to a new function name
runkit_function_redefine	Replace a function definition with a new implementation
runkit_function_remove	Remove a function definition
runkit_function_rename	Change a function’s name
runkit_import	Process a PHP file importing function and class definitions, overwriting where appropriate
runkit_lint	Check the PHP syntax of the specified php code
runkit_lint_file	Check the PHP syntax of the specified file
runkit_method_add	Dynamically adds a new method to a given class
runkit_method_copy	Copies a method from class to another
runkit_method_redefine	Dynamically changes the code of the given method
runkit_method_remove	Dynamically removes the given method
runkit_method_rename	Dynamically changes the name of the given method
runkit_return_value_used	Determines if the current functions return value will be used
Runkit_Sandbox	Runkit Sandbox Class – PHP Virtual Machine
runkit_sandbox_output_handler	Specify a function to capture and/or process output from a runkit sandbox
Runkit_Sandbox_Parent	Runkit Anti-Sandbox Class
runkit_superglobals	Return numerically indexed array of registered superglobals

s

函数	说明
scandir	列出指定路径中的文件和目录
sem_acquire	Acquire a semaphore
sem_get	Get a semaphore id
sem_release	Release a semaphore
sem_remove	Remove a semaphore
serialize	产生一个可存储的值的表示
session_abort	Discard session array changes and finish session
session_cache_expire	返回当前缓存的到期时间
session_cache_limiter	读取/设置缓存限制器
session_commit	session_write_close 的别名
session_decode	解码会话数据
session_destroy	销毁一个会话中的全部数据
session_encode	将当前会话数据编码为一个字符串
session_get_cookie_params	获取会话 cookie 参数
session_id	获取/设置当前会话 ID
session_is_registered	检查变量是否在会话中已经注册
session_module_name	获取/设置会话模块名称
session_name	读取/设置会话名称
session_pgsql_add_error	Increments error counts and sets last error message
session_pgsql_get_error	Returns number of errors and last error message
session_pgsql_get_field	Get custom field value
session_pgsql_reset	Reset connection to session database servers
session_pgsql_set_field	Set custom field value
session_pgsql_status	Get current save handler status
session_regenerate_id	使用新生成的会话 ID 更新现有会话 ID
session_register	Register one or more global variables with the current session
session_register_shutdown	关闭会话
session_reset	Re-initialize session array with original values
session_save_path	读取/设置当前会话的保存路径
session_set_cookie_params	设置会话 cookie 参数
session_set_save_handler	设置用户自定义会话存储函数
session_start	启动新会话或者重用现有会话
session_status	Returns the current session status
session_unregister	Unregister a global variable from the current session
session_unset	Free all session variables
session_write_close	Write session data and end session
setcookie	Send a cookie
setlocale	设置地区信息
setproctitle	Set the process title
setrawcookie	Send a cookie without urlencoding the cookie value
setthreadtitle	Set the thread title
settype	设置变量的类型
set_error_handler	设置一个用户定义的错误处理函数
set_exception_handler	设置一个用户定义的异常处理函数。
set_file_buffer	stream_set_write_buffer 的别名
set_include_path	设置 include_path 配置选项
set_magic_quotes_runtime	设置当前 magic_quotes_runtime 配置选项的激活状态
set_socket_blocking	别名 stream_set_blocking
set_time_limit	设置脚本最大执行时间
sha1	计算字符串的 sha1 散列值
sha1_file	计算文件的 sha1 散列值
shell_exec	通过 shell 环境执行命令，并且将完整的输出以字符串的方式返回。
shmop_close	Close shared memory block
shmop_delete	Delete shared memory block
shmop_open	Create or open shared memory block
shmop_read	Read data from shared memory block
shmop_size	Get size of shared memory block
shmop_write	Write data into shared memory block
shm_attach	Creates or open a shared memory segment
shm_detach	Disconnects from shared memory segment
shm_get_var	Returns a variable from shared memory
shm_has_var	Check whether a specific entry exists
shm_put_var	Inserts or updates a variable in shared memory
shm_remove	Removes shared memory from Unix systems
shm_remove_var	Removes a variable from shared memory
show_source	别名 highlight_file
shuffle	将数组打乱
signeurlpaiement	Obtain the payment url (needs 2 arguments)
similar_text	计算两个字符串的相似度
simplexml_import_dom	Get a SimpleXMLElement object from a DOM node.
simplexml_load_file	Interprets an XML file into an object
simplexml_load_string	Interprets a string of XML into an object
sin	正弦
sinh	双曲正弦
sizeof	count 的别名
sleep	延缓执行
snmp2_get	Fetch an SNMP object
snmp2_getnext	Fetch the SNMP object which follows the given object id
snmp2_real_walk	Return all objects including their respective object ID within the specified one
snmp2_set	Set the value of an SNMP object
snmp2_walk	Fetch all the SNMP objects from an agent
snmp3_get	Fetch an SNMP object
snmp3_getnext	Fetch the SNMP object which follows the given object id
snmp3_real_walk	Return all objects including their respective object ID within the specified one
snmp3_set	Set the value of an SNMP object
snmp3_walk	Fetch all the SNMP objects from an agent
snmpget	获取一个 SNMP 对象
snmpgetnext	Fetch the SNMP object which follows the given object id
snmprealwalk	返回指定的所有对象，包括它们各自的对象 ID
snmpset	设置一个 SNMP 对象
snmpwalk	从代理返回所有的 SNMP 对象
snmpwalkoid	查询关于网络实体的信息树
snmp_get_quick_print	返回 UCD 库中 quick_print 设置的当前值
snmp_get_valueretrieval	Return the method how the SNMP values will be returned
snmp_read_mib	Reads and parses a MIB file into the active MIB tree
snmp_set_enum_print	Return all values that are enums with their enum value instead of the raw integer
snmp_set_oid_numeric_print	Set the OID output format
snmp_set_oid_output_format	Set the OID output format
snmp_set_quick_print	设置 UCD SNMP 库中 quick_print 的值
snmp_set_valueretrieval	Specify the method how the SNMP values will be returned
socket_accept	Accepts a connection on a socket
socket_bind	给套接字绑定名字
socket_clear_error	清除套接字或者最后的错误代码上的错误
socket_close	关闭套接字资源
socket_cmsg_space	Calculate message buffer size
socket_connect	开启一个套接字连接
socket_create	创建一个套接字（通讯节点）
socket_create_listen	Opens a socket on port to accept connections
socket_create_pair	Creates a pair of indistinguishable sockets and stores them in an array
socket_getpeername	Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
socket_getsockname	Queries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
socket_get_option	Gets socket options for the socket
socket_get_status	别名 stream_get_meta_data
socket_import_stream	Import a stream
socket_last_error	Returns the last error on the socket
socket_listen	Listens for a connection on a socket
socket_read	Reads a maximum of length bytes from a socket
socket_recv	Receives data from a connected socket
socket_recvfrom	Receives data from a socket whether or not it is connection-oriented
socket_recvmsg	Read a message
socket_select	Runs the select() system call on the given arrays of sockets with a specified timeout
socket_send	Sends data to a connected socket
socket_sendmsg	Send a message
socket_sendto	Sends a message to a socket, whether it is connected or not
socket_set_block	Sets blocking mode on a socket resource
socket_set_blocking	别名 stream_set_blocking
socket_set_nonblock	Sets nonblocking mode for file descriptor fd
socket_set_option	Sets socket options for the socket
socket_set_timeout	别名 stream_set_timeout
socket_shutdown	Shuts down a socket for receiving, sending, or both
socket_strerror	Return a string describing a socket error
socket_write	Write to a socket
solr_get_version	返回当前Solr扩展的版本
sort	对数组排序
soundex	Calculate the soundex key of a string
split	用正则表达式将字符串分割到数组中
spliti	用正则表达式不区分大小写将字符串分割到数组中
spl_autoload	__autoload()函数的默认实现
spl_autoload_call	尝试调用所有已注册的__autoload()函数来装载请求类
spl_autoload_extensions	注册并返回spl_autoload函数使用的默认文件扩展名。
spl_autoload_functions	返回所有已注册的__autoload()函数。
spl_autoload_register	注册给定的函数作为 __autoload 的实现
spl_autoload_unregister	注销已注册的__autoload()函数
spl_classes	返回所有可用的SPL类
spl_object_hash	返回指定对象的hash id
sprintf	Return a formatted string
SQL acceptable by 4D	PDO and SQL 4D
sqlite_array_query	Execute a query against a given database and returns an array
sqlite_busy_timeout	Set busy timeout duration, or disable busy handlers
sqlite_changes	Returns the number of rows that were changed by the most recent SQL statement
sqlite_close	Closes an open SQLite database
sqlite_column	Fetches a column from the current row of a result set
sqlite_create_aggregate	Register an aggregating UDF for use in SQL statements
sqlite_create_function	Registers a “regular” User Defined Function for use in SQL statements
sqlite_current	Fetches the current row from a result set as an array
sqlite_error_string	Returns the textual description of an error code
sqlite_escape_string	Escapes a string for use as a query parameter
sqlite_exec	Executes a result-less query against a given database
sqlite_factory	Opens an SQLite database and returns an SQLiteDatabase object
sqlite_fetch_all	Fetches all rows from a result set as an array of arrays
sqlite_fetch_array	Fetches the next row from a result set as an array
sqlite_fetch_column_types	Return an array of column types from a particular table
sqlite_fetch_object	Fetches the next row from a result set as an object
sqlite_fetch_single	Fetches the first column of a result set as a string
sqlite_fetch_string	别名 sqlite_fetch_single
sqlite_field_name	Returns the name of a particular field
sqlite_has_more	Finds whether or not more rows are available
sqlite_has_prev	Returns whether or not a previous row is available
sqlite_key	Returns the current row index
sqlite_last_error	Returns the error code of the last error for a database
sqlite_last_insert_rowid	Returns the rowid of the most recently inserted row
sqlite_libencoding	Returns the encoding of the linked SQLite library
sqlite_libversion	Returns the version of the linked SQLite library
sqlite_next	Seek to the next row number
sqlite_num_fields	Returns the number of fields in a result set
sqlite_num_rows	Returns the number of rows in a buffered result set
sqlite_open	Opens an SQLite database and create the database if it does not exist
sqlite_popen	Opens a persistent handle to an SQLite database and create the database if it does not exist
sqlite_prev	Seek to the previous row number of a result set
sqlite_query	Executes a query against a given database and returns a result handle
sqlite_rewind	Seek to the first row number
sqlite_seek	Seek to a particular row number of a buffered result set
sqlite_single_query	Executes a query and returns either an array for one single column or the value of the first row
sqlite_udf_decode_binary	Decode binary data passed as parameters to an UDF
sqlite_udf_encode_binary	Encode binary data before returning it from an UDF
sqlite_unbuffered_query	Execute a query that does not prefetch and buffer all data
sqlite_valid	Returns whether more rows are available
sqlsrv_begin_transaction	Begins a database transaction
sqlsrv_cancel	Cancels a statement
sqlsrv_client_info	Returns information about the client and specified connection
sqlsrv_close	Closes an open connection and releases resourses associated with the connection
sqlsrv_commit	Commits a transaction that was begun with sqlsrv_begin_transaction
sqlsrv_configure	Changes the driver error handling and logging configurations
sqlsrv_connect	Opens a connection to a Microsoft SQL Server database
sqlsrv_errors	Returns error and warning information about the last SQLSRV operation performed
sqlsrv_execute	Executes a statement prepared with sqlsrv_prepare
sqlsrv_fetch	Makes the next row in a result set available for reading
sqlsrv_fetch_array	Returns a row as an array
sqlsrv_fetch_object	Retrieves the next row of data in a result set as an object
sqlsrv_field_metadata	Retrieves metadata for the fields of a statement prepared by sqlsrv_prepare or sqlsrv_query
sqlsrv_free_stmt	Frees all resources for the specified statement
sqlsrv_get_config	Returns the value of the specified configuration setting
sqlsrv_get_field	Gets field data from the currently selected row
sqlsrv_has_rows	Indicates whether the specified statement has rows
sqlsrv_next_result	Makes the next result of the specified statement active
sqlsrv_num_fields	Retrieves the number of fields (columns) on a statement
sqlsrv_num_rows	Retrieves the number of rows in a result set
sqlsrv_prepare	Prepares a query for execution
sqlsrv_query	Prepares and executes a query.
sqlsrv_rollback	Rolls back a transaction that was begun with sqlsrv_begin_transaction
sqlsrv_rows_affected	Returns the number of rows modified by the last INSERT, UPDATE, or DELETE query executed
sqlsrv_send_stream_data	Sends data from parameter streams to the server
sqlsrv_server_info	Returns information about the server
SQL types with PDO_4D and PHP	SQL types with PDO_4D and PHP
sql_regcase	产生用于不区分大小的匹配的正则表达式
sqrt	平方根
srand	播下随机数发生器种子
sscanf	根据指定格式解析输入的字符
ssdeep_fuzzy_compare	Calculates the match score between two fuzzy hash signatures
ssdeep_fuzzy_hash	Create a fuzzy hash from a string
ssdeep_fuzzy_hash_filename	Create a fuzzy hash from a file
ssh2_auth_agent	Authenticate over SSH using the ssh agent
ssh2_auth_hostbased_file	Authenticate using a public hostkey
ssh2_auth_none	Authenticate as “none”
ssh2_auth_password	Authenticate over SSH using a plain password
ssh2_auth_pubkey_file	Authenticate using a public key
ssh2_connect	Connect to an SSH server
ssh2_exec	Execute a command on a remote server
ssh2_fetch_stream	Fetch an extended data stream
ssh2_fingerprint	Retrieve fingerprint of remote server
ssh2_methods_negotiated	Return list of negotiated methods
ssh2_publickey_add	Add an authorized publickey
ssh2_publickey_init	Initialize Publickey subsystem
ssh2_publickey_list	List currently authorized publickeys
ssh2_publickey_remove	Remove an authorized publickey
ssh2_scp_recv	Request a file via SCP
ssh2_scp_send	Send a file via SCP
ssh2_sftp	Initialize SFTP subsystem
ssh2_sftp_chmod	Changes file mode
ssh2_sftp_lstat	Stat a symbolic link
ssh2_sftp_mkdir	Create a directory
ssh2_sftp_readlink	Return the target of a symbolic link
ssh2_sftp_realpath	Resolve the realpath of a provided path string
ssh2_sftp_rename	Rename a remote file
ssh2_sftp_rmdir	Remove a directory
ssh2_sftp_stat	Stat a file on a remote filesystem
ssh2_sftp_symlink	Create a symlink
ssh2_sftp_unlink	Delete a file
ssh2_shell	Request an interactive shell
ssh2_tunnel	Open a tunnel through a remote server
SSL 上下文选项	SSL 上下文选项清单
stat	给出文件的信息
stats_absolute_deviation	Returns the absolute deviation of an array of values
stats_cdf_beta	CDF function for BETA Distribution. Calculates any one parameter of the beta distribution given values for the others.
stats_cdf_binomial	Calculates any one parameter of the binomial distribution given values for the others.
stats_cdf_cauchy	Not documented
stats_cdf_chisquare	Calculates any one parameter of the chi-square distribution given values for the others.
stats_cdf_exponential	Not documented
stats_cdf_f	Calculates any one parameter of the F distribution given values for the others.
stats_cdf_gamma	Calculates any one parameter of the gamma distribution given values for the others.
stats_cdf_laplace	Not documented
stats_cdf_logistic	Not documented
stats_cdf_negative_binomial	Calculates any one parameter of the negative binomial distribution given values for the others.
stats_cdf_noncentral_chisquare	Calculates any one parameter of the non-central chi-square distribution given values for the others.
stats_cdf_noncentral_f	Calculates any one parameter of the Non-central F distribution given values for the others.
stats_cdf_poisson	Calculates any one parameter of the Poisson distribution given values for the others.
stats_cdf_t	Calculates any one parameter of the T distribution given values for the others.
stats_cdf_uniform	Not documented
stats_cdf_weibull	Not documented
stats_covariance	Computes the covariance of two data sets
stats_dens_beta	Not documented
stats_dens_cauchy	Not documented
stats_dens_chisquare	Not documented
stats_dens_exponential	Not documented
stats_dens_f	说明
stats_dens_gamma	Not documented
stats_dens_laplace	Not documented
stats_dens_logistic	Not documented
stats_dens_negative_binomial	Not documented
stats_dens_normal	Not documented
stats_dens_pmf_binomial	Not documented
stats_dens_pmf_hypergeometric	说明
stats_dens_pmf_poisson	Not documented
stats_dens_t	Not documented
stats_dens_weibull	Not documented
stats_den_uniform	Not documented
stats_harmonic_mean	Returns the harmonic mean of an array of values
stats_kurtosis	Computes the kurtosis of the data in the array
stats_rand_gen_beta	Generates beta random deviate
stats_rand_gen_chisquare	Generates random deviate from the distribution of a chisquare with “df” degrees of freedom random variable.
stats_rand_gen_exponential	Generates a single random deviate from an exponential distribution with mean “av”
stats_rand_gen_f	Generates a random deviate
stats_rand_gen_funiform	Generates uniform float between low (exclusive) and high (exclusive)
stats_rand_gen_gamma	Generates random deviates from a gamma distribution
stats_rand_gen_ibinomial	Generates a single random deviate from a binomial distribution whose number of trials is “n” (n >= 0) and whose probability of an event in each trial is “pp” ([0;1]). Method : algorithm BTPE
stats_rand_gen_ibinomial_negative	Generates a single random deviate from a negative binomial distribution. Arguments : n
stats_rand_gen_int	Generates random integer between 1 and 2147483562
stats_rand_gen_ipoisson	Generates a single random deviate from a Poisson distribution with mean “mu” (mu >= 0.0).
stats_rand_gen_iuniform	Generates integer uniformly distributed between LOW (inclusive) and HIGH (inclusive)
stats_rand_gen_noncenral_chisquare	Generates random deviate from the distribution of a noncentral chisquare with “df” degrees of freedom and noncentrality parameter “xnonc”. d must be >= 1.0, xnonc must >= 0.0
stats_rand_gen_noncentral_f	Generates a random deviate from the noncentral F (variance ratio) distribution with “dfn” degrees of freedom in the numerator, and “dfd” degrees of freedom in the denominator, and noncentrality parameter “xnonc”. Method : directly generates ratio of noncentral numerator chisquare variate to central denominator chisquare variate.
stats_rand_gen_noncentral_t	Generates a single random deviate from a noncentral T distribution
stats_rand_gen_normal	Generates a single random deviate from a normal distribution with mean, av, and standard deviation, sd (sd >= 0). Method : Renames SNORM from TOMS as slightly modified by BWB to use RANF instead of SUNIF.
stats_rand_gen_t	Generates a single random deviate from a T distribution
stats_rand_get_seeds	Not documented
stats_rand_phrase_to_seeds	generate two seeds for the RGN random number generator
stats_rand_ranf	Returns a random floating point number from a uniform distribution over 0
stats_rand_setall	Not documented
stats_skew	Computes the skewness of the data in the array
stats_standard_deviation	Returns the standard deviation
stats_stat_binomial_coef	Not documented
stats_stat_correlation	Not documented
stats_stat_gennch	Not documented
stats_stat_independent_t	Not documented
stats_stat_innerproduct	说明
stats_stat_noncentral_t	Calculates any one parameter of the noncentral t distribution give values for the others.
stats_stat_paired_t	Not documented
stats_stat_percentile	Not documented
stats_stat_powersum	Not documented
stats_variance	Returns the population variance
stomp_connect_error	Returns a string description of the last connect error
stomp_version	Gets the current stomp extension version
strcasecmp	二进制安全比较字符串（不区分大小写）
strchr	别名 strstr
strcmp	二进制安全字符串比较
strcoll	基于区域设置的字符串比较
strcspn	获取不匹配遮罩的起始子字符串的长度
stream_bucket_append	Append bucket to brigade
stream_bucket_make_writeable	Return a bucket object from the brigade for operating on
stream_bucket_new	Create a new bucket for use on the current stream
stream_bucket_prepend	Prepend bucket to brigade
stream_context_create	创建资源流上下文
stream_context_get_default	Retrieve the default stream context
stream_context_get_options	获取资源流/数据包/上下文的参数
stream_context_get_params	Retrieves parameters from a context
stream_context_set_default	Set the default stream context
stream_context_set_option	对资源流、数据包或者上下文设置参数
stream_context_set_params	Set parameters for a stream/wrapper/context
stream_copy_to_stream	Copies data from one stream to another
stream_encoding	设置数据流的字符集
stream_filter_append	Attach a filter to a stream
stream_filter_prepend	Attach a filter to a stream
stream_filter_register	Register a user defined stream filter
stream_filter_remove	从资源流里移除某个过滤器
stream_get_contents	读取资源流到一个字符串
stream_get_filters	获取已注册的数据流过滤器列表
stream_get_line	从资源流里读取一行直到给定的定界符
stream_get_meta_data	从封装协议文件指针中取得报头／元数据
stream_get_transports	获取已注册的套接字传输协议列表
stream_get_wrappers	获取已注册的流类型
stream_is_local	Checks if a stream is a local stream
stream_notification_callback	A callback function for the notification context parameter
stream_register_wrapper	注册一个用 PHP 类实现的 URL 封装协议
stream_resolve_include_path	Resolve filename against the include path
stream_select	Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by tv_sec and tv_usec
stream_set_blocking	为资源流设置阻塞或者阻塞模式
stream_set_chunk_size	设置资源流区块大小
stream_set_read_buffer	Set read file buffering on the given stream
stream_set_timeout	Set timeout period on a stream
stream_set_write_buffer	Sets write file buffering on the given stream
stream_socket_accept	接受由 stream_socket_server 创建的套接字连接
stream_socket_client	Open Internet or Unix domain socket connection
stream_socket_enable_crypto	Turns encryption on/off on an already connected socket
stream_socket_get_name	获取本地或者远程的套接字名称
stream_socket_pair	创建一对完全一样的网络套接字连接流
stream_socket_recvfrom	Receives data from a socket, connected or not
stream_socket_sendto	Sends a message to a socket, whether it is connected or not
stream_socket_server	Create an Internet or Unix domain server socket
stream_socket_shutdown	Shutdown a full-duplex connection
stream_supports_lock	Tells whether the stream supports locking.
stream_wrapper_restore	Restores a previously unregistered built-in wrapper
stream_wrapper_unregister	Unregister a URL wrapper
strftime	根据区域设置格式化本地时间／日期
stripcslashes	反引用一个使用 addcslashes 转义的字符串
stripos	查找字符串首次出现的位置（不区分大小写）
stripslashes	反引用一个引用字符串
strip_tags	从字符串中去除 HTML 和 PHP 标记
stristr	strstr 函数的忽略大小写版本
strlen	获取字符串长度
strnatcasecmp	使用“自然顺序”算法比较字符串（不区分大小写）
strnatcmp	使用自然排序算法比较字符串
strncasecmp	二进制安全比较字符串开头的若干个字符（不区分大小写）
strncmp	二进制安全比较字符串开头的若干个字符
strpbrk	在字符串中查找一组字符的任何一个字符
strpos	查找字符串首次出现的位置
strptime	解析由 strftime 生成的日期／时间
strrchr	查找指定字符在字符串中的最后一次出现
strrev	反转字符串
strripos	计算指定字符串在目标字符串中最后一次出现的位置（不区分大小写）
strrpos	计算指定字符串在目标字符串中最后一次出现的位置
strspn	计算字符串中全部字符都存在于指定字符集合中的第一段子串的长度。
strstr	查找字符串的首次出现
strtok	标记分割字符串
strtolower	将字符串转化为小写
strtotime	将任何英文文本的日期时间描述解析为 Unix 时间戳
strtoupper	将字符串转化为大写
strtr	转换指定字符
strval	获取变量的字符串值
str_getcsv	解析 CSV 字符串为一个数组
str_ireplace	str_replace 的忽略大小写版本
str_pad	使用另一个字符串填充字符串为指定长度
str_repeat	重复一个字符串
str_replace	子字符串替换
str_rot13	对字符串执行 ROT13 转换
str_shuffle	随机打乱一个字符串
str_split	将字符串转换为数组
str_word_count	返回字符串中单词的使用情况
substr	返回字符串的子串
substr_compare	二进制安全比较字符串（从偏移位置比较指定长度）
substr_count	计算字串出现的次数
substr_replace	替换字符串的子串
svn_add	计划在工作目录添加项
svn_auth_get_parameter	Retrieves authentication parameter
svn_auth_set_parameter	Sets an authentication parameter
svn_blame	Get the SVN blame for a file
svn_cat	Returns the contents of a file in a repository
svn_checkout	Checks out a working copy from the repository
svn_cleanup	Recursively cleanup a working copy directory, finishing incomplete operations and removing locks
svn_client_version	Returns the version of the SVN client libraries
svn_commit	Sends changes from the local working copy to the repository
svn_delete	Delete items from a working copy or repository.
svn_diff	Recursively diffs two paths
svn_export	Export the contents of a SVN directory
svn_fs_abort_txn	Abort a transaction, returns true if everything is okay, false otherwise
svn_fs_apply_text	Creates and returns a stream that will be used to replace
svn_fs_begin_txn2	Create a new transaction
svn_fs_change_node_prop	Return true if everything is ok, false otherwise
svn_fs_check_path	Determines what kind of item lives at path in a given repository fsroot
svn_fs_contents_changed	Return true if content is different, false otherwise
svn_fs_copy	Copies a file or a directory, returns true if all is ok, false otherwise
svn_fs_delete	Deletes a file or a directory, return true if all is ok, false otherwise
svn_fs_dir_entries	Enumerates the directory entries under path; returns a hash of dir names to file type
svn_fs_file_contents	Returns a stream to access the contents of a file from a given version of the fs
svn_fs_file_length	Returns the length of a file from a given version of the fs
svn_fs_is_dir	Return true if the path points to a directory, false otherwise
svn_fs_is_file	Return true if the path points to a file, false otherwise
svn_fs_make_dir	Creates a new empty directory, returns true if all is ok, false otherwise
svn_fs_make_file	Creates a new empty file, returns true if all is ok, false otherwise
svn_fs_node_created_rev	Returns the revision in which path under fsroot was created
svn_fs_node_prop	Returns the value of a property for a node
svn_fs_props_changed	Return true if props are different, false otherwise
svn_fs_revision_prop	Fetches the value of a named property
svn_fs_revision_root	Get a handle on a specific version of the repository root
svn_fs_txn_root	Creates and returns a transaction root
svn_fs_youngest_rev	Returns the number of the youngest revision in the filesystem
svn_import	Imports an unversioned path into a repository
svn_log	Returns the commit log messages of a repository URL
svn_ls	Returns list of directory contents in repository URL, optionally at revision number
svn_mkdir	Creates a directory in a working copy or repository
svn_repos_create	Create a new subversion repository at path
svn_repos_fs	Gets a handle on the filesystem for a repository
svn_repos_fs_begin_txn_for_commit	Create a new transaction
svn_repos_fs_commit_txn	Commits a transaction and returns the new revision
svn_repos_hotcopy	Make a hot-copy of the repos at repospath; copy it to destpath
svn_repos_open	Open a shared lock on a repository.
svn_repos_recover	Run recovery procedures on the repository located at path.
svn_revert	Revert changes to the working copy
svn_status	Returns the status of working copy files and directories
svn_update	Update working copy
sybase_affected_rows	Gets number of affected rows in last query
sybase_close	Closes a Sybase connection
sybase_connect	Opens a Sybase server connection
sybase_data_seek	Moves internal row pointer
sybase_deadlock_retry_count	Sets the deadlock retry count
sybase_fetch_array	Fetch row as array
sybase_fetch_assoc	Fetch a result row as an associative array
sybase_fetch_field	Get field information from a result
sybase_fetch_object	Fetch a row as an object
sybase_fetch_row	Get a result row as an enumerated array
sybase_field_seek	Sets field offset
sybase_free_result	Frees result memory
sybase_get_last_message	Returns the last message from the server
sybase_min_client_severity	Sets minimum client severity
sybase_min_error_severity	Sets minimum error severity
sybase_min_message_severity	Sets minimum message severity
sybase_min_server_severity	Sets minimum server severity
sybase_num_fields	Gets the number of fields in a result set
sybase_num_rows	Get number of rows in a result set
sybase_pconnect	Open persistent Sybase connection
sybase_query	Sends a Sybase query
sybase_result	Get result data
sybase_select_db	Selects a Sybase database
sybase_set_message_handler	Sets the handler called when a server message is raised
sybase_unbuffered_query	Send a Sybase query and do not block
symlink	建立符号连接
syslog	Generate a system log message
system	执行外部程序，并且显示输出
sys_getloadavg	获取系统的负载（load average）
sys_get_temp_dir	返回用于临时文件的目录

t

函数	说明
taint	Taint a string
tan	正切
tanh	双曲正切
tcpwrap_check	Performs a tcpwrap check
tempnam	建立一个具有唯一文件名的文件
textdomain	Sets the default domain
tidy_access_count	Returns the Number of Tidy accessibility warnings encountered for specified document
tidy_config_count	Returns the Number of Tidy configuration errors encountered for specified document
tidy_error_count	Returns the Number of Tidy errors encountered for specified document
tidy_get_output	Return a string representing the parsed tidy markup
tidy_load_config	Load an ASCII Tidy configuration file with the specified encoding
tidy_reset_config	Restore Tidy configuration to default values
tidy_save_config	Save current settings to named file
tidy_setopt	Updates the configuration settings for the specified tidy document
tidy_set_encoding	Set the input/output character encoding for parsing markup
tidy_warning_count	Returns the Number of Tidy warnings encountered for specified document
time	返回当前的 Unix 时间戳
timezone_name_from_abbr	Returns the timezone name from abbreviation
timezone_version_get	Gets the version of the timezonedb
time_nanosleep	延缓执行若干秒和纳秒
time_sleep_until	使脚本睡眠到指定的时间为止。
tmpfile	建立一个临时文件
token_get_all	将提供的源码按 PHP 标记进行分割
token_name	获取提供的 PHP 解析器代号的符号名称
touch	设定文件的访问和修改时间
trader_acos	Vector Trigonometric ACos
trader_ad	Chaikin A/D Line
trader_add	Vector Arithmetic Add
trader_adosc	Chaikin A/D Oscillator
trader_adx	Average Directional Movement Index
trader_adxr	Average Directional Movement Index Rating
trader_apo	Absolute Price Oscillator
trader_aroon	Aroon
trader_aroonosc	Aroon Oscillator
trader_asin	Vector Trigonometric ASin
trader_atan	Vector Trigonometric ATan
trader_atr	Average True Range
trader_avgprice	Average Price
trader_bbands	Bollinger Bands
trader_beta	Beta
trader_bop	Balance Of Power
trader_cci	Commodity Channel Index
trader_cdl2crows	Two Crows
trader_cdl3blackcrows	Three Black Crows
trader_cdl3inside	Three Inside Up/Down
trader_cdl3linestrike	Three-Line Strike
trader_cdl3outside	Three Outside Up/Down
trader_cdl3starsinsouth	Three Stars In The South
trader_cdl3whitesoldiers	Three Advancing White Soldiers
trader_cdlabandonedbaby	Abandoned Baby
trader_cdladvanceblock	Advance Block
trader_cdlbelthold	Belt-hold
trader_cdlbreakaway	Breakaway
trader_cdlclosingmarubozu	Closing Marubozu
trader_cdlconcealbabyswall	Concealing Baby Swallow
trader_cdlcounterattack	Counterattack
trader_cdldarkcloudcover	Dark Cloud Cover
trader_cdldoji	Doji
trader_cdldojistar	Doji Star
trader_cdldragonflydoji	Dragonfly Doji
trader_cdlengulfing	Engulfing Pattern
trader_cdleveningdojistar	Evening Doji Star
trader_cdleveningstar	Evening Star
trader_cdlgapsidesidewhite	Up/Down-gap side-by-side white lines
trader_cdlgravestonedoji	Gravestone Doji
trader_cdlhammer	Hammer
trader_cdlhangingman	Hanging Man
trader_cdlharami	Harami Pattern
trader_cdlharamicross	Harami Cross Pattern
trader_cdlhighwave	High-Wave Candle
trader_cdlhikkake	Hikkake Pattern
trader_cdlhikkakemod	Modified Hikkake Pattern
trader_cdlhomingpigeon	Homing Pigeon
trader_cdlidentical3crows	Identical Three Crows
trader_cdlinneck	In-Neck Pattern
trader_cdlinvertedhammer	Inverted Hammer
trader_cdlkicking	Kicking
trader_cdlkickingbylength	Kicking
trader_cdlladderbottom	Ladder Bottom
trader_cdllongleggeddoji	Long Legged Doji
trader_cdllongline	Long Line Candle
trader_cdlmarubozu	Marubozu
trader_cdlmatchinglow	Matching Low
trader_cdlmathold	Mat Hold
trader_cdlmorningdojistar	Morning Doji Star
trader_cdlmorningstar	Morning Star
trader_cdlonneck	On-Neck Pattern
trader_cdlpiercing	Piercing Pattern
trader_cdlrickshawman	Rickshaw Man
trader_cdlrisefall3methods	Rising/Falling Three Methods
trader_cdlseparatinglines	Separating Lines
trader_cdlshootingstar	Shooting Star
trader_cdlshortline	Short Line Candle
trader_cdlspinningtop	Spinning Top
trader_cdlstalledpattern	Stalled Pattern
trader_cdlsticksandwich	Stick Sandwich
trader_cdltakuri	Takuri (Dragonfly Doji with very long lower shadow)
trader_cdltasukigap	Tasuki Gap
trader_cdlthrusting	Thrusting Pattern
trader_cdltristar	Tristar Pattern
trader_cdlunique3river	Unique 3 River
trader_cdlupsidegap2crows	Upside Gap Two Crows
trader_cdlxsidegap3methods	Upside/Downside Gap Three Methods
trader_ceil	Vector Ceil
trader_cmo	Chande Momentum Oscillator
trader_correl	Pearson’s Correlation Coefficient (r)
trader_cos	Vector Trigonometric Cos
trader_cosh	Vector Trigonometric Cosh
trader_dema	Double Exponential Moving Average
trader_div	Vector Arithmetic Div
trader_dx	Directional Movement Index
trader_ema	Exponential Moving Average
trader_errno	Get error code
trader_exp	Vector Arithmetic Exp
trader_floor	Vector Floor
trader_get_compat	Get compatibility mode
trader_get_unstable_period	Get unstable period
trader_ht_dcperiod	Hilbert Transform
trader_ht_dcphase	Hilbert Transform
trader_ht_phasor	Hilbert Transform
trader_ht_sine	Hilbert Transform
trader_ht_trendline	Hilbert Transform
trader_ht_trendmode	Hilbert Transform
trader_kama	Kaufman Adaptive Moving Average
trader_linearreg	Linear Regression
trader_linearreg_angle	Linear Regression Angle
trader_linearreg_intercept	Linear Regression Intercept
trader_linearreg_slope	Linear Regression Slope
trader_ln	Vector Log Natural
trader_log10	Vector Log10
trader_ma	Moving average
trader_macd	Moving Average Convergence/Divergence
trader_macdext	MACD with controllable MA type
trader_macdfix	Moving Average Convergence/Divergence Fix 12/26
trader_mama	MESA Adaptive Moving Average
trader_mavp	Moving average with variable period
trader_max	Highest value over a specified period
trader_maxindex	Index of highest value over a specified period
trader_medprice	Median Price
trader_mfi	Money Flow Index
trader_midpoint	MidPoint over period
trader_midprice	Midpoint Price over period
trader_min	Lowest value over a specified period
trader_minindex	Index of lowest value over a specified period
trader_minmax	Lowest and highest values over a specified period
trader_minmaxindex	Indexes of lowest and highest values over a specified period
trader_minus_di	Minus Directional Indicator
trader_minus_dm	Minus Directional Movement
trader_mom	Momentum
trader_mult	Vector Arithmetic Mult
trader_natr	Normalized Average True Range
trader_obv	On Balance Volume
trader_plus_di	Plus Directional Indicator
trader_plus_dm	Plus Directional Movement
trader_ppo	Percentage Price Oscillator
trader_roc	Rate of change : ((price/prevPrice)-1)*100
trader_rocp	Rate of change Percentage: (price-prevPrice)/prevPrice
trader_rocr	Rate of change ratio: (price/prevPrice)
trader_rocr100	Rate of change ratio 100 scale: (price/prevPrice)*100
trader_rsi	Relative Strength Index
trader_sar	Parabolic SAR
trader_sarext	Parabolic SAR
trader_set_compat	Set compatibility mode
trader_set_unstable_period	Set unstable period
trader_sin	Vector Trigonometric Sin
trader_sinh	Vector Trigonometric Sinh
trader_sma	Simple Moving Average
trader_sqrt	Vector Square Root
trader_stddev	Standard Deviation
trader_stoch	Stochastic
trader_stochf	Stochastic Fast
trader_stochrsi	Stochastic Relative Strength Index
trader_sub	Vector Arithmetic Subtraction
trader_sum	Summation
trader_t3	Triple Exponential Moving Average (T3)
trader_tan	Vector Trigonometric Tan
trader_tanh	Vector Trigonometric Tanh
trader_tema	Triple Exponential Moving Average
trader_trange	True Range
trader_trima	Triangular Moving Average
trader_trix	1-day Rate-Of-Change (ROC) of a Triple Smooth EMA
trader_tsf	Time Series Forecast
trader_typprice	Typical Price
trader_ultosc	Ultimate Oscillator
trader_var	Variance
trader_wclprice	Weighted Close Price
trader_willr	Williams’ %R
trader_wma	Weighted Moving Average
trait_exists	检查指定的 trait 是否存在
trigger_error	产生一个用户级别的 error/warning/notice 信息
trim	去除字符串首尾处的空白字符（或者其他字符）

u

函数	说明
uasort	使用用户自定义的比较函数对数组中的值进行排序并保持索引关联
ucfirst	将字符串的首字母转换为大写
ucwords	将字符串中每个单词的首字母转换为大写
udm_add_search_limit	Add various search limits
udm_alloc_agent	Allocate mnoGoSearch session
udm_alloc_agent_array	Allocate mnoGoSearch session
udm_api_version	Get mnoGoSearch API version
udm_cat_list	Get all the categories on the same level with the current one
udm_cat_path	Get the path to the current category
udm_check_charset	Check if the given charset is known to mnogosearch
udm_clear_search_limits	Clear all mnoGoSearch search restrictions
udm_crc32	Return CRC32 checksum of given string
udm_errno	Get mnoGoSearch error number
udm_error	Get mnoGoSearch error message
udm_find	Perform search
udm_free_agent	Free mnoGoSearch session
udm_free_ispell_data	Free memory allocated for ispell data
udm_free_res	Free mnoGoSearch result
udm_get_doc_count	Get total number of documents in database
udm_get_res_field	Fetch a result field
udm_get_res_param	Get mnoGoSearch result parameters
udm_hash32	Return Hash32 checksum of given string
udm_load_ispell_data	Load ispell data
udm_set_agent_param	Set mnoGoSearch agent session parameters
uksort	使用用户自定义的比较函数对数组中的键名进行排序
umask	改变当前的 umask
uniqid	生成一个唯一ID
unixtojd	转变Unix时间戳为Julian Day计数
unlink	删除文件
unpack	Unpack data from binary string
unregister_tick_function	De-register a function for execution on each tick
unserialize	从已存储的表示中创建 PHP 的值
unset	释放给定的变量
untaint	Untaint strings
uopz_backup	Backup a function
uopz_compose	Compose a class
uopz_copy	Copy a function
uopz_delete	Delete a function
uopz_extend	Extend a class at runtime
uopz_flags	Get or set flags on function or class
uopz_function	Creates a function at runtime
uopz_implement	Implements an interface at runtime
uopz_overload	Overload a VM opcode
uopz_redefine	Redefine a constant
uopz_rename	Rename a function at runtime
uopz_restore	Restore a previously backed up function
uopz_undefine	Undefine a constant
urldecode	解码已编码的 URL 字符串
urlencode	编码 URL 字符串
user_error	trigger_error 的别名
use_soap_error_handler	Set whether to use the SOAP error handler
usleep	以指定的微秒数延迟执行
usort	使用用户自定义的比较函数对数组中的值进行排序
utf8_decode	将用 UTF-8 方式编码的 ISO-8859-1 字符串转换成单字节的 ISO-8859-1 字符串。
utf8_encode	将 ISO-8859-1 编码的字符串转换为 UTF-8 编码

v

函数	说明
variant_abs	Returns the absolute value of a variant
variant_add	“Adds” two variant values together and returns the result
variant_and	Performs a bitwise AND operation between two variants
variant_cast	Convert a variant into a new variant object of another type
variant_cat	concatenates two variant values together and returns the result
variant_cmp	Compares two variants
variant_date_from_timestamp	Returns a variant date representation of a Unix timestamp
variant_date_to_timestamp	Converts a variant date/time value to Unix timestamp
variant_div	Returns the result from dividing two variants
variant_eqv	Performs a bitwise equivalence on two variants
variant_fix	Returns the integer portion of a variant
variant_get_type	Returns the type of a variant object
variant_idiv	Converts variants to integers and then returns the result from dividing them
variant_imp	Performs a bitwise implication on two variants
variant_int	Returns the integer portion of a variant
variant_mod	Divides two variants and returns only the remainder
variant_mul	Multiplies the values of the two variants
variant_neg	Performs logical negation on a variant
variant_not	Performs bitwise not negation on a variant
variant_or	Performs a logical disjunction on two variants
variant_pow	Returns the result of performing the power function with two variants
variant_round	Rounds a variant to the specified number of decimal places
variant_set	Assigns a new value for a variant object
variant_set_type	Convert a variant into another type “in-place”
variant_sub	Subtracts the value of the right variant from the left variant value
variant_xor	Performs a logical exclusion on two variants
var_dump	打印变量的相关信息
var_export	输出或返回一个变量的字符串表示
version_compare	对比两个「PHP 规范化」的版本数字字符串
vfprintf	将格式化字符串写入流
virtual	执行 Apache 子请求
vpopmail_add_alias_domain	Add an alias for a virtual domain
vpopmail_add_alias_domain_ex	Add alias to an existing virtual domain
vpopmail_add_domain	Add a new virtual domain
vpopmail_add_domain_ex	Add a new virtual domain
vpopmail_add_user	Add a new user to the specified virtual domain
vpopmail_alias_add	Insert a virtual alias
vpopmail_alias_del	Deletes all virtual aliases of a user
vpopmail_alias_del_domain	Deletes all virtual aliases of a domain
vpopmail_alias_get	Get all lines of an alias for a domain
vpopmail_alias_get_all	Get all lines of an alias for a domain
vpopmail_auth_user	Attempt to validate a username/domain/password
vpopmail_del_domain	Delete a virtual domain
vpopmail_del_domain_ex	Delete a virtual domain
vpopmail_del_user	Delete a user from a virtual domain
vpopmail_error	Get text message for last vpopmail error
vpopmail_passwd	Change a virtual user’s password
vpopmail_set_user_quota	Sets a virtual user’s quota
vprintf	输出格式化字符串
vsprintf	返回格式化字符串

w

函数	说明
wddx_add_vars	Add variables to a WDDX packet with the specified ID
wddx_deserialize	Unserializes a WDDX packet
wddx_packet_end	Ends a WDDX packet with the specified ID
wddx_packet_start	Starts a new WDDX packet with structure inside it
wddx_serialize_value	Serialize a single value into a WDDX packet
wddx_serialize_vars	Serialize variables into a WDDX packet
win32_continue_service	Resumes a paused service
win32_create_service	Creates a new service entry in the SCM database
win32_delete_service	Deletes a service entry from the SCM database
win32_get_last_control_message	Returns the last control message that was sent to this service
win32_pause_service	Pauses a service
win32_ps_list_procs	List running processes
win32_ps_stat_mem	Stat memory utilization
win32_ps_stat_proc	Stat process
win32_query_service_status	Queries the status of a service
win32_set_service_status	Update the service status
win32_start_service	Starts a service
win32_start_service_ctrl_dispatcher	Registers the script with the SCM, so that it can act as the service with the given name
win32_stop_service	Stops a service
wincache_fcache_fileinfo	Retrieves information about files cached in the file cache
wincache_fcache_meminfo	Retrieves information about file cache memory usage
wincache_lock	Acquires an exclusive lock on a given key
wincache_ocache_fileinfo	Retrieves information about files cached in the opcode cache
wincache_ocache_meminfo	Retrieves information about opcode cache memory usage
wincache_refresh_if_changed	Refreshes the cache entries for the cached files
wincache_rplist_fileinfo	Retrieves information about resolve file path cache
wincache_rplist_meminfo	Retrieves information about memory usage by the resolve file path cache
wincache_scache_info	Retrieves information about files cached in the session cache
wincache_scache_meminfo	Retrieves information about session cache memory usage
wincache_ucache_add	Adds a variable in user cache only if variable does not already exist in the cache
wincache_ucache_cas	Compares the variable with old value and assigns new value to it
wincache_ucache_clear	Deletes entire content of the user cache
wincache_ucache_dec	Decrements the value associated with the key
wincache_ucache_delete	Deletes variables from the user cache
wincache_ucache_exists	Checks if a variable exists in the user cache
wincache_ucache_get	Gets a variable stored in the user cache
wincache_ucache_inc	Increments the value associated with the key
wincache_ucache_info	Retrieves information about data stored in the user cache
wincache_ucache_meminfo	Retrieves information about user cache memory usage
wincache_ucache_set	Adds a variable in user cache and overwrites a variable if it already exists in the cache
wincache_unlock	Releases an exclusive lock on a given key
wordwrap	打断字符串为指定数量的字串

x

函数	说明
xattr_get	Get an extended attribute
xattr_list	Get a list of extended attributes
xattr_remove	Remove an extended attribute
xattr_set	Set an extended attribute
xattr_supported	Check if filesystem supports extended attributes
xdiff_file_bdiff	Make binary diff of two files
xdiff_file_bdiff_size	Read a size of file created by applying a binary diff
xdiff_file_bpatch	Patch a file with a binary diff
xdiff_file_diff	Make unified diff of two files
xdiff_file_diff_binary	Alias of xdiff_file_bdiff
xdiff_file_merge3	Merge 3 files into one
xdiff_file_patch	Patch a file with an unified diff
xdiff_file_patch_binary	Alias of xdiff_file_bpatch
xdiff_file_rabdiff	Make binary diff of two files using the Rabin’s polynomial fingerprinting algorithm
xdiff_string_bdiff	Make binary diff of two strings
xdiff_string_bdiff_size	Read a size of file created by applying a binary diff
xdiff_string_bpatch	Patch a string with a binary diff
xdiff_string_diff	Make unified diff of two strings
xdiff_string_diff_binary	Alias of xdiff_string_bdiff
xdiff_string_merge3	Merge 3 strings into one
xdiff_string_patch	Patch a string with an unified diff
xdiff_string_patch_binary	Alias of xdiff_string_bpatch
xdiff_string_rabdiff	Make binary diff of two strings using the Rabin’s polynomial fingerprinting algorithm
xhprof_disable	停止 xhprof 分析器
xhprof_enable	启动 xhprof 性能分析器
xhprof_sample_disable	停止 xhprof 性能采样分析器
xhprof_sample_enable	以采样模式启动 XHProf 性能分析
xmlrpc_decode	将 XML 译码为 PHP 本身的类型
xmlrpc_decode_request	将 XML 译码为 PHP 本身的类型
xmlrpc_encode	为 PHP 的值生成 XML
xmlrpc_encode_request	为 PHP 的值生成 XML
xmlrpc_get_type	为 PHP 的值获取 xmlrpc 的类型
xmlrpc_is_fault	Determines if an array value represents an XMLRPC fault
xmlrpc_parse_method_descriptions	将 XML 译码成方法描述的列表
xmlrpc_server_add_introspection_data	添加自我描述的文档
xmlrpc_server_call_method	解析 XML 请求同时调用方法
xmlrpc_server_create	创建一个 xmlrpc 服务端
xmlrpc_server_destroy	销毁服务端资源
xmlrpc_server_register_introspection_callback	注册一个 PHP 函数用于生成文档
xmlrpc_server_register_method	注册一个 PHP 函数用于匹配 xmlrpc 方法名
xmlrpc_set_type	为一个 PHP 字符串值设置 xmlrpc 的类型、base64 或日期时间
xml_error_string	获取 XML 解析器的错误字符串
xml_get_current_byte_index	获取 XML 解析器的当前字节索引
xml_get_current_column_number	获取 XML 解析器的当前列号
xml_get_current_line_number	获取 XML 解析器的当前行号
xml_get_error_code	获取 XML 解析器错误代码
xml_parse	开始解析一个 XML 文档
xml_parser_create	建立一个 XML 解析器
xml_parser_create_ns	生成一个支持命名空间的 XML 解析器
xml_parser_free	释放指定的 XML 解析器
xml_parser_get_option	从 XML 解析器获取选项设置信息
xml_parser_set_option	为指定 XML 解析进行选项设置
xml_parse_into_struct	将 XML 数据解析到数组中
xml_set_character_data_handler	建立字符数据处理器
xml_set_default_handler	建立默认处理器
xml_set_element_handler	建立起始和终止元素处理器
xml_set_end_namespace_decl_handler	建立终止命名空间声明处理器
xml_set_external_entity_ref_handler	建立外部实体指向处理器
xml_set_notation_decl_handler	建立注释声明处理器
xml_set_object	在对象中使用 XML 解析器
xml_set_processing_instruction_handler	建立处理指令（PI）处理器
xml_set_start_namespace_decl_handler	建立起始命名空间声明处理器
xml_set_unparsed_entity_decl_handler	建立未解析实体定义声明处理器

y

函数	说明
yaml_emit	Returns the YAML representation of a value
yaml_emit_file	Send the YAML representation of a value to a file
yaml_parse	Parse a YAML stream
yaml_parse_file	Parse a YAML stream from a file
yaml_parse_url	Parse a Yaml stream from a URL
yaz_addinfo	Returns additional error information
yaz_ccl_conf	Configure CCL parser
yaz_ccl_parse	Invoke CCL Parser
yaz_close	Close YAZ connection
yaz_connect	Prepares for a connection to a Z39.50 server
yaz_database	Specifies the databases within a session
yaz_element	Specifies Element-Set Name for retrieval
yaz_errno	Returns error number
yaz_error	Returns error description
yaz_es	Prepares for an Extended Service Request
yaz_es_result	Inspects Extended Services Result
yaz_get_option	Returns value of option for connection
yaz_hits	Returns number of hits for last search
yaz_itemorder	Prepares for Z39.50 Item Order with an ILL-Request package
yaz_present	Prepares for retrieval (Z39.50 present)
yaz_range	Specifies a range of records to retrieve
yaz_record	Returns a record
yaz_scan	Prepares for a scan
yaz_scan_result	Returns Scan Response result
yaz_schema	Specifies schema for retrieval
yaz_search	Prepares for a search
yaz_set_option	Sets one or more options for connection
yaz_sort	Sets sorting criteria
yaz_syntax	Specifies the preferred record syntax for retrieval
yaz_wait	Wait for Z39.50 requests to complete
yp_all	Traverse the map and call a function on each entry
yp_cat	Return an array containing the entire map
yp_errno	Returns the error code of the previous operation
yp_err_string	Returns the error string associated with the given error code
yp_first	Returns the first key-value pair from the named map
yp_get_default_domain	Fetches the machine’s default NIS domain
yp_master	Returns the machine name of the master NIS server for a map
yp_match	Returns the matched line
yp_next	Returns the next key-value pair in the named map
yp_order	Returns the order number for a map

z

函数	说明
zend_logo_guid	获取 Zend guid
zend_thread_id	返回当前线程的唯一识别符
zend_version	获取当前 Zend 引擎的版本
zip_close	关闭一个ZIP档案文件
zip_entry_close	关闭目录项
zip_entry_compressedsize	检索目录项压缩过后的大小
zip_entry_compressionmethod	检索目录实体的压缩方法
zip_entry_filesize	检索目录实体的实际大小
zip_entry_name	检索目录项的名称
zip_entry_open	打开用于读取的目录实体
zip_entry_read	读取一个打开了的压缩目录实体
zip_open	打开ZIP存档文件
zip_read	读取ZIP存档文件中下一项
zlib_decode	Uncompress any raw/gzip/zlib encoded data
zlib_encode	Compress data with the specified encoding
zlib_get_coding_type	Returns the coding type used for output compression