PHP 字符类
1
<?php
2#============================
3# Filename: string.class.php
4# Note : 字符串管理
5# Update : 2008-5-8
6# Cool!!
7#============================
8class QG_C_STRING
9{
10 var $script = false;
11 var $iframe = false;
12 var $style = false;
13
14 function __construct($script=false,$iframe=false,$style=false)
15 {
16 $this->script = $script;
17 $this->iframe = $iframe;
18 $this->style = $style;
19 }
20
21 #[兼容PHP4]
22 function QG_C_STRING($script=false,$iframe=false,$style=false)
23 {
24 $this->__construct($script,$iframe,$style);
25 }
26
27 function __destruct()
28 {
29 return true;
30 }
31
32 #[设置状态属性]
33 function set($var,$status)
34 {
35 $this->$var = $status;
36 }
37
38 function safe($msg)
39 {
40 if(!$msg)
41 {
42 return false;
43 }
44 if(is_array($msg))
45 {
46 foreach($msg AS $key=>$value)
47 {
48 $msg[$key] = $this->safe($value);
49 }
50 }
51 else
52 {
53 $msg = trim($msg);
54 $old = array("&"," ","'",'"',"<",">","\t","\r");
55 $new = array("&"," ","'",""","<",">"," ","");
56 $msg = str_replace($old,$new,$msg);
57 $msg = str_replace(" "," ",$msg);
58 $old = array("/<script(.*)<\/script>/isU","/<frame(.*)>/isU","/<\/fram(.*)>/isU","/<iframe(.*)>/isU","/<\/ifram(.*)>/isU","/<style(.*)<\/style>/isU");
59 $new = array("","","","","","");
60 $msg = preg_replace($old,$new,$msg);
61 }
62 return $msg;
63 }
64
65 function html($msg)
66 {
67 if(is_array($msg))
68 {
69 foreach($msg AS $key=>$value)
70 {
71 $msg[$key] = $this->html($value);
72 }
73 }
74 else
75 {
76 $msg = trim($msg);
77 $msg = stripslashes($msg);
78 if(!$this->script)
79 {
80 $msg = preg_replace("/<script(.*)<\/script>/isU","",$msg);
81 }
82 if(!$this->iframe)
83 {
84 $msg = preg_replace("/<frame(.*)>/isU","",$msg);
85 $msg = preg_replace("/<\/fram(.*)>/isU","",$msg);
86 $msg = preg_replace("/<iframe(.*)>/isU","",$msg);
87 $msg = preg_replace("/<\/ifram(.*)>/isU","",$msg);
88 }
89 if(!$this->style)
90 {
91 $msg = preg_replace("/<style(.*)<\/style>/isU","",$msg);
92 }
93 #[超链接在新窗口打开]
94 $msg = preg_replace("/<a(.*)target=[ |'|\"](.*)[ |'|\"](.*)>/isU","<a\\1 \\3>",$msg);
95 $msg = preg_replace("/<a(.*)>/isU","<a\\1 target='_blank'>",$msg);
96 #[替换网址]
97 $url = $this->get_url();
98 $msg = str_replace($url,"",$msg);
99 $msg = addslashes($msg);
100 }
101 return $msg;
102 }
103
104 #[截取字符长度，仅支持UTF-8]
105 function cut($string,$length,$dot="…")
106 {
107 if(strlen($string) <= $length)
108 {
109 return $string;
110 }
111 $strcut = '';
112 $n = $tn = $noc = 0;
113 while ($n < strlen($string))
114 {
115 $t = ord($string[$n]);
116 if($t == 9 || $t == 10 || (32 <= $t && $t <= 126))
117 {
118 $tn = 1; $n++; $noc++;
119 }
120 elseif(194 <= $t && $t <= 223)
121 {
122 $tn = 2; $n += 2; $noc += 2;
123 }
124 elseif(224 <= $t && $t < 239)
125 {
126 $tn = 3; $n += 3; $noc += 2;
127 }
128 elseif(240 <= $t && $t <= 247)
129 {
130 $tn = 4; $n += 4; $noc += 2;
131 }
132 elseif(248 <= $t && $t <= 251)
133 {
134 $tn = 5; $n += 5; $noc += 2;
135 }
136 elseif($t == 252 || $t == 253)
137 {
138 $tn = 6; $n += 6; $noc += 2;
139 }
140 else
141 {
142 $n++;
143 }
144
145 if ($noc >= $length)
146 {
147 break;
148 }
149 }
150 if ($noc > $length)
151 {
152 $n -= $tn;
153 }
154 $strcut = substr($string, 0, $n);
155 return $strcut.$dot;
156 }
157
158 #[编码转换，使用PHP里的iconv功能]
159 function charset($msg, $s_code="UTF-8", $e_code="GBK")
160 {
161 if(!$msg)
162 {
163 return false;
164 }
165 if(is_array($msg))
166 {
167 foreach($msg AS $key=>$value)
168 {
169 $msg[$key] = $this->charset($value,$s_code,$e_code);
170 }
171 }
172 else
173 {
174 if(function_exists("iconv"))
175 {
176 $msg = iconv($s_code,$e_code,$msg);
177 }
178 }
179 return $msg;
180 }
181
182 function format($msg,$f=false)
183 {
184 $status = get_magic_quotes_gpc();
185 if(!$status || $f)
186 {
187 if(is_array($msg))
188 {
189 foreach($msg AS $key=>$value)
190 {
191 $msg[$key] = $this->format($value,$f);
192 }
193 }
194 else
195 {
196 $msg = addslashes($msg);
197 }
198 }
199 return $msg;
200 }
201
202 function num_format($a,$ext=2)
203 {
204 if(!$a || $a == 0)
205 {
206 return false;
207 }
208 if($a <= 1024)
209 {
210 $a = "1 KB";
211 }
212 elseif($a>1024 && $a<(1024*1024))
213 {
214 $a = round(($a/1024),$ext)." KB";
215 }
216 elseif($a>=(1024*1024) && $a<(1024*1024*1024))
217 {
218 $a = round(($a/(1024*1024)),$ext)." MB";
219 }
220 else
221 {
222 $a = round(($a/(1024*1024*1024)),$ext)." GB";
223 }
224 return $a;
225 }
226
227 function get_url()
228 {
229 $myurl = "http://".str_replace("http://","",$_SERVER["SERVER_NAME"]);
230 $docu = $_SERVER["PHP_SELF"];
231 $array = explode("/",$docu);
232 $count = count($array);
233 if($count>1)
234 {
235 foreach($array AS $key=>$value)
236 {
237 $value = trim($value);
238 if($value)
239 {
240 if(($key+1) < $count)
241 {
242 $myurl .= "/".$value;
243 }
244 }
245 }
246 }
247 $myurl .= "/";
248 return $myurl;
249 }
250}
251?>
<?php2
#============================3
# Filename: string.class.php4
# Note : 字符串管理5
# Update : 2008-5-86
# Cool!!7
#============================8
class QG_C_STRING9
{10
var $script = false;11
var $iframe = false;12
var $style = false;13
14
function __construct($script=false,$iframe=false,$style=false)15
{16
$this->script = $script;17
$this->iframe = $iframe;18
$this->style = $style;19
}20
21
#[兼容PHP4]22
function QG_C_STRING($script=false,$iframe=false,$style=false)23
{24
$this->__construct($script,$iframe,$style);25
}26
27
function __destruct()28
{29
return true;30
}31
32
#[设置状态属性]33
function set($var,$status)34
{35
$this->$var = $status;36
}37
38
function safe($msg)39
{40
if(!$msg)41
{42
return false;43
}44
if(is_array($msg))45
{46
foreach($msg AS $key=>$value)47
{48
$msg[$key] = $this->safe($value);49
}50
}51
else52
{53
$msg = trim($msg);54
$old = array("&"," ","'",'"',"<",">","\t","\r");55
$new = array("&"," ","'",""","<",">"," ","");56
$msg = str_replace($old,$new,$msg);57
$msg = str_replace(" "," ",$msg);58
$old = array("/<script(.*)<\/script>/isU","/<frame(.*)>/isU","/<\/fram(.*)>/isU","/<iframe(.*)>/isU","/<\/ifram(.*)>/isU","/<style(.*)<\/style>/isU");59
$new = array("","","","","","");60
$msg = preg_replace($old,$new,$msg);61
}62
return $msg;63
}64
65
function html($msg)66
{67
if(is_array($msg))68
{69
foreach($msg AS $key=>$value)70
{71
$msg[$key] = $this->html($value);72
}73
}74
else75
{76
$msg = trim($msg);77
$msg = stripslashes($msg);78
if(!$this->script)79
{80
$msg = preg_replace("/<script(.*)<\/script>/isU","",$msg);81
}82
if(!$this->iframe)83
{84
$msg = preg_replace("/<frame(.*)>/isU","",$msg);85
$msg = preg_replace("/<\/fram(.*)>/isU","",$msg);86
$msg = preg_replace("/<iframe(.*)>/isU","",$msg);87
$msg = preg_replace("/<\/ifram(.*)>/isU","",$msg);88
}89
if(!$this->style)90
{91
$msg = preg_replace("/<style(.*)<\/style>/isU","",$msg);92
}93
#[超链接在新窗口打开]94
$msg = preg_replace("/<a(.*)target=[ |'|\"](.*)[ |'|\"](.*)>/isU","<a\\1 \\3>",$msg);95
$msg = preg_replace("/<a(.*)>/isU","<a\\1 target='_blank'>",$msg);96
#[替换网址]97
$url = $this->get_url();98
$msg = str_replace($url,"",$msg);99
$msg = addslashes($msg);100
}101
return $msg;102
}103
104
#[截取字符长度，仅支持UTF-8]105
function cut($string,$length,$dot="…")106
{107
if(strlen($string) <= $length)108
{109
return $string;110
}111
$strcut = '';112
$n = $tn = $noc = 0;113
while ($n < strlen($string))114
{115
$t = ord($string[$n]);116
if($t == 9 || $t == 10 || (32 <= $t && $t <= 126))117
{118
$tn = 1; $n++; $noc++;119
}120
elseif(194 <= $t && $t <= 223)121
{122
$tn = 2; $n += 2; $noc += 2;123
}124
elseif(224 <= $t && $t < 239)125
{126
$tn = 3; $n += 3; $noc += 2;127
}128
elseif(240 <= $t && $t <= 247)129
{130
$tn = 4; $n += 4; $noc += 2;131
}132
elseif(248 <= $t && $t <= 251)133
{134
$tn = 5; $n += 5; $noc += 2;135
}136
elseif($t == 252 || $t == 253)137
{138
$tn = 6; $n += 6; $noc += 2;139
}140
else141
{142
$n++;143
}144
145
if ($noc >= $length)146
{147
break;148
}149
}150
if ($noc > $length)151
{152
$n -= $tn;153
}154
$strcut = substr($string, 0, $n);155
return $strcut.$dot;156
}157
158
#[编码转换，使用PHP里的iconv功能]159
function charset($msg, $s_code="UTF-8", $e_code="GBK")160
{161
if(!$msg)162
{163
return false;164
}165
if(is_array($msg))166
{167
foreach($msg AS $key=>$value)168
{169
$msg[$key] = $this->charset($value,$s_code,$e_code);170
}171
}172
else173
{174
if(function_exists("iconv"))175
{176
$msg = iconv($s_code,$e_code,$msg);177
}178
}179
return $msg;180
}181
182
function format($msg,$f=false)183
{184
$status = get_magic_quotes_gpc();185
if(!$status || $f)186
{187
if(is_array($msg))188
{189
foreach($msg AS $key=>$value)190
{191
$msg[$key] = $this->format($value,$f);192
}193
}194
else195
{196
$msg = addslashes($msg);197
}198
}199
return $msg;200
}201
202
function num_format($a,$ext=2)203
{204
if(!$a || $a == 0)205
{206
return false;207
}208
if($a <= 1024)209
{210
$a = "1 KB";211
}212
elseif($a>1024 && $a<(1024*1024))213
{214
$a = round(($a/1024),$ext)." KB";215
}216
elseif($a>=(1024*1024) && $a<(1024*1024*1024))217
{218
$a = round(($a/(1024*1024)),$ext)." MB";219
}220
else221
{222
$a = round(($a/(1024*1024*1024)),$ext)." GB";223
}224
return $a;225
}226
227
function get_url()228
{229
$myurl = "http://".str_replace("http://","",$_SERVER["SERVER_NAME"]);230
$docu = $_SERVER["PHP_SELF"];231
$array = explode("/",$docu);232
$count = count($array);233
if($count>1)234
{235
foreach($array AS $key=>$value)236
{237
$value = trim($value);238
if($value)239
{240
if(($key+1) < $count)241
{242
$myurl .= "/".$value;243
}244
}245
}246
}247
$myurl .= "/";248
return $myurl;249
}250
}251
?>
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