PHP文件上载过滤类

<?php /**	 * file download class	 * Create Time:06/23/2009	 * Author:DAKER.W	 * QQ:451021477		 */	class Download{		private $debug			= false;		private $errorMsg		= '';			private $filter			= array();		private $fileName		= '';		private $mineType		= '';		private $xlq_filetype	= array();		private $limitTime		= 60;		/**		 * @param string $fileFilter 		 * @param boolean $isDebug		 */		function __construct($fileFilter='', $isDebug=true)		{			$this->setFilter($fileFilter);			$this->setDebug($isDebug);			$this->setFileType();		}				function downloadfile($filename)		{			$this->fileName		= $filename;			if($this->filecheck()){				$fn				= basename($this->fileName);				ob_end_clean();				@set_time_limit($this->limitTime);				header('Cache-control: max-age=31536000');				header('Expires: '.gmdate('D, d M Y H:i:s',time()+31536000).' GMT');				header('Content-Encoding: none');				header('Content-Length: '.filesize($this->fileName));				header('Content-Disposition: attachment; filename='.$fn);				header('Content-Type: '.$this->mineType);				readfile($this->fileName);				return true;			}else{				return false;			}		}				function filecheck()		{			$fileName		= $this->fileName;			if(file_exists($fileName)){				$fileType	= strtolower(array_pop(explode(".", $fileName)));				if(!in_array($fileType, $this->filter)){					$this->errorMsg	.= sprintf("%s can't download!", $fileName);					if($this->debug)exit(sprintf("%s can't download!", $fileName));					return false;				}else {					if(function_exists("mime_content_type")){						$this->mineType		= mime_content_type($fileName);					}										if(empty($this->mineType)){						if(isset($this->xlq_filetype[$fileType])){							$this->mineType		= $this->xlq_filetype[$fileType];						}					}										if(!empty($this->mineType)){						return true;					}else {						$this->errorMsg			.= "Can't get file type!";						if($this->debug)exit("Can't get file type!");						return false;																		}				}							}else {				$this->errorMsg				.= sprintf("%s isn't exists!", $fileName);				if($this->debug)exit(sprintf("%s isn't exists!", $fileName));				return false;							}		}		function setFileType()		{		    $this->xlq_filetype['chm']='application/octet-stream';		    $this->xlq_filetype['ppt']='application/vnd.ms-powerpoint';		    $this->xlq_filetype['xls']='application/vnd.ms-excel';		    $this->xlq_filetype['doc']='application/msword';		    $this->xlq_filetype['exe']='application/octet-stream';		    $this->xlq_filetype['rar']='application/octet-stream';		    $this->xlq_filetype['js']="javascrīpt/js";		    $this->xlq_filetype['css']="text/css";		    $this->xlq_filetype['hqx']="application/mac-binhex40";		    $this->xlq_filetype['bin']="application/octet-stream";		    $this->xlq_filetype['oda']="application/oda";		    $this->xlq_filetype['pdf']="application/pdf";		    $this->xlq_filetype['ai']="application/postsrcipt";		    $this->xlq_filetype['eps']="application/postsrcipt";		    $this->xlq_filetype['es']="application/postsrcipt";		    $this->xlq_filetype['rtf']="application/rtf";		    $this->xlq_filetype['mif']="application/x-mif";		    $this->xlq_filetype['csh']="application/x-csh";		    $this->xlq_filetype['dvi']="application/x-dvi";		    $this->xlq_filetype['hdf']="application/x-hdf";		    $this->xlq_filetype['nc']="application/x-netcdf";		    $this->xlq_filetype['cdf']="application/x-netcdf";		    $this->xlq_filetype['latex']="application/x-latex";		    $this->xlq_filetype['ts']="application/x-troll-ts";		    $this->xlq_filetype['src']="application/x-wais-source";		    $this->xlq_filetype['zip']="application/zip";		    $this->xlq_filetype['bcpio']="application/x-bcpio";		    $this->xlq_filetype['cpio']="application/x-cpio";		    $this->xlq_filetype['gtar']="application/x-gtar";		    $this->xlq_filetype['shar']="application/x-shar";		    $this->xlq_filetype['sv4cpio']="application/x-sv4cpio";		    $this->xlq_filetype['sv4crc']="application/x-sv4crc";		    $this->xlq_filetype['tar']="application/x-tar";		    $this->xlq_filetype['ustar']="application/x-ustar";		    $this->xlq_filetype['man']="application/x-troff-man";		    $this->xlq_filetype['sh']="application/x-sh";		    $this->xlq_filetype['tcl']="application/x-tcl";		    $this->xlq_filetype['tex']="application/x-tex";		    $this->xlq_filetype['texi']="application/x-texinfo";		    $this->xlq_filetype['texinfo']="application/x-texinfo";		    $this->xlq_filetype['t']="application/x-troff";		    $this->xlq_filetype['tr']="application/x-troff";		    $this->xlq_filetype['roff']="application/x-troff";		    $this->xlq_filetype['shar']="application/x-shar";		    $this->xlq_filetype['me']="application/x-troll-me";		    $this->xlq_filetype['ts']="application/x-troll-ts";		    $this->xlq_filetype['gif']="image/gif";		    $this->xlq_filetype['jpeg']="image/pjpeg";		    $this->xlq_filetype['jpg']="image/pjpeg";		    $this->xlq_filetype['jpe']="image/pjpeg";		    $this->xlq_filetype['ras']="image/x-cmu-raster";		    $this->xlq_filetype['pbm']="image/x-portable-bitmap";		    $this->xlq_filetype['ppm']="image/x-portable-pixmap";		    $this->xlq_filetype['xbm']="image/x-xbitmap";		    $this->xlq_filetype['xwd']="image/x-xwindowdump";		    $this->xlq_filetype['ief']="image/ief";		    $this->xlq_filetype['tif']="image/tiff";		    $this->xlq_filetype['tiff']="image/tiff";		    $this->xlq_filetype['pnm']="image/x-portable-anymap";		    $this->xlq_filetype['pgm']="image/x-portable-graymap";		    $this->xlq_filetype['rgb']="image/x-rgb";		    $this->xlq_filetype['xpm']="image/x-xpixmap";		    $this->xlq_filetype['txt']="text/plain";		    $this->xlq_filetype['c']="text/plain";		    $this->xlq_filetype['cc']="text/plain";		    $this->xlq_filetype['h']="text/plain";		    $this->xlq_filetype['html']="text/html";		    $this->xlq_filetype['htm']="text/html";		    $this->xlq_filetype['htl']="text/html";		    $this->xlq_filetype['rtx']="text/richtext";		    $this->xlq_filetype['etx']="text/x-setext";		    $this->xlq_filetype['tsv']="text/tab-separated-values";		    $this->xlq_filetype['mpeg']="video/mpeg";		    $this->xlq_filetype['mpg']="video/mpeg";		    $this->xlq_filetype['mpe']="video/mpeg";		    $this->xlq_filetype['avi']="video/x-msvideo";		    $this->xlq_filetype['qt']="video/quicktime";		    $this->xlq_filetype['mov']="video/quicktime";		    $this->xlq_filetype['moov']="video/quicktime";		    $this->xlq_filetype['movie']="video/x-sgi-movie";		    $this->xlq_filetype['au']="audio/basic";		    $this->xlq_filetype['snd']="audio/basic";		    $this->xlq_filetype['wav']="audio/x-wav";		    $this->xlq_filetype['aif']="audio/x-aiff";		    $this->xlq_filetype['aiff']="audio/x-aiff";		    $this->xlq_filetype['aifc']="audio/x-aiff";		    $this->xlq_filetype['swf']="application/x-shockwave-flash";		}				function setFilter($fileFilter)		{			if(empty($fileFilter))return ;			$this->filter	= explode(",", strtolower($fileFilter));		}				function setDebug($debug)		{			$this->debug	= $debug;		}				function setlimittime($limittime)		{			$this->limitTime	= $limittime;		}				function getfilename($filename)		{			return  $this->fileName;		}				function getErrorMsgs()		{			return $this->errorMsg;			}				function __destruct()		{			$this->errorMsg			= '';		}	}?>