php实现常用文件上传类

  1 <?php
  2 /**
  3  * 上传文件类
  4  * @param _path : 服务器文件存放路径
  5  * @param _allowType : 允许上传的文件类型和所对应的MIME
  6  * @param _file : 上传的文件信息
  7  */
  8 class Upload{
  9 
 10     private $_path;
 11     private $_allowType;
 12     private $_file;
 13     /**
 14      * 构造函数
 15      * @param string : 服务器上存放上传文件的路径
 16      */
 17     function __construct( $path = ‘‘ )
 18     {
 19         $this->_path = $path;
 20         $this->_allowType = array(
 21                 // images
 22                 ‘bmp‘ => ‘image/x-ms-bmp‘,
 23                 ‘jpg‘ => ‘image/jpeg‘,
 24                 ‘jpeg‘ => ‘image/jpeg‘,
 25                 ‘gif‘ => ‘image/gif‘,
 26                 ‘png‘ => ‘image/png‘,
 27                 ‘tif‘ => ‘image/tiff‘,
 28                 ‘tiff‘ => ‘image/tiff‘,
 29                 ‘tga‘ => ‘image/x-targa‘,
 30                 ‘psd‘ => ‘image/vnd.adobe.photoshop‘,
 31                 //文本
 32                 ‘txt‘ => ‘text/plain‘,
 33                 ‘php‘ => ‘text/x-php‘,
 34                 ‘html‘ => ‘text/html‘,
 35                 ‘htm‘ => ‘text/html‘,
 36                 ‘js‘ => ‘text/javascript‘,
 37                 ‘css‘ => ‘text/css‘,
 38                 ‘rtf‘ => ‘text/rtf‘,
 39                 ‘rtfd‘ => ‘text/rtfd‘,
 40                 ‘py‘ => ‘text/x-python‘,
 41                 ‘java‘ => ‘text/x-java-source‘,
 42                 ‘rb‘ => ‘text/x-ruby‘,
 43                 ‘sh‘ => ‘text/x-shellscript‘,
 44                 ‘pl‘ => ‘text/x-perl‘,
 45                 ‘sql‘ => ‘text/x-sql‘,
 46                 //应用
 47                 ‘exe‘ => ‘application/octet-stream‘,
 48                 ‘doc‘ => ‘application/vnd.ms-word‘,
 49                 ‘docx‘ => ‘application/vnd.ms-word‘,
 50                 ‘xls‘ => ‘application/vnd.ms-excel‘,
 51                 ‘ppt‘ => ‘application/vnd.ms-powerpoint‘,
 52                 ‘pps‘ => ‘application/vnd.ms-powerpoint‘,
 53                 ‘pdf‘ => ‘application/pdf‘,
 54                 ‘xml‘ => ‘application/xml‘,
 55                 //音频
 56                 ‘mp3‘ => ‘audio/mpeg‘,
 57                 ‘mid‘ => ‘audio/midi‘,
 58                 ‘ogg‘ => ‘audio/ogg‘,
 59                 ‘mp4a‘ => ‘audio/mp4‘,
 60                 ‘wav‘ => ‘audio/wav‘,
 61                 ‘wma‘ => ‘audio/x-ms-wma‘,
 62                 //视频
 63                 ‘avi‘ => ‘video/x-msvideo‘,
 64                 ‘dv‘ => ‘video/x-dv‘,
 65                 ‘mp4‘ => ‘video/mp4‘,
 66                 ‘mpeg‘ => ‘video/mpeg‘,
 67                 ‘mpg‘ => ‘video/mpeg‘,
 68                 ‘mov‘ => ‘video/quicktime‘,
 69                 ‘wm‘ => ‘video/x-ms-wmv‘,
 70                 ‘flv‘ => ‘video/x-flv‘,
 71                 ‘mkv‘ => ‘video/x-matroska‘
 72             );
 73     }
 74     /**
 75      * 上传函数
 76      * @param  string : 表单元素的name 值
 77      * @return [type]
 78      */
 79     public function upload( $txtName = ‘‘ )
 80     {
 81         $this->_file = $_FILES[$txtName];
 82         if( $this->_file[‘error‘] == 0){
 83             $fileType = end( explode(‘.‘, $this->_file[‘name‘] ));
 84             $allowType = array();
 85             foreach( $this->_allowType as $item=>$value ){
 86                 $allowType[] = $item;
 87             }
 88             if( !in_array($fileType, $allowType)){
 89                 die(‘上传的文件格式不正确！‘);
 90             }else{
 91                 if(move_uploaded_file($this->file[‘tmp_name‘], ($this->path).$this->file[‘name‘]))
 92                     {
 93                         echo "<script>alert(‘上传成功!‘)</script>";
 94                     }
 95                 else
 96                     {
 97                         echo "<script>alert(‘上传失败!‘);</script>";
 98                     }
 99             }
100 
101         }else{
102             //没有正确上传
103             switch ($this->file[‘error‘]){
104                 case 1:
105                     die(‘文件大小超过系统限制。‘);
106                     break;
107                 case 2:
108                     die(‘文件大小超过预定义限制。‘);
109                     break;
110                 case 3:
111                     die(‘文件为完全上传。‘);
112                     break;
113                 case 4:
114                     die(‘未上传任何文件。‘);
115                     break;
116                 default:
117                     die(‘上传出错‘);
118                     break;
119             }
120         }
121     }
122     //end upload
123 }