PHP上传文件
1.PHP的文件上传/资源指令
1.file_uploads=on/off
2.max_execution_time=integer
3.memory_limit=integer M
4.upload_max_filesize=integer M
5.upload_tmp_dir=string
6.post_max_size=integer M
2.$_FILES数组
1.$_FILES['userfile']['error']
2.$_FILES['userfile']['name']
3.$_FILES['userfile']['size']
4.$_FILES['userfile']['tmp_name']
5.$_FILES['userfile']['type']
3.PHP的文件上传函数
1.确定是否上传文件
bool is_uploaded_file(path)
2.移动上传文件
bool move_uploaded_file(filename,destination)
4.上传错误消息
1.UPLOAD_ERR_OK,0
2.UPLOAD_ERR_INI_SIZE,1
3.UPLOAD_ERR_FROM_SIZE,2
4.UPLOAD_ERR_PARTIAL,3
5.UPLOAD_ERR_NO_FILE,4
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