PHP文件下载过滤类
<?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= '';}}?>//?? 使用范例：
?$filename='data.rar';
?$download=new download('php,exe,html',false);
? if(!$download->downloadfile($filename,'数据'))
? {
????????? echo $download->geterrormsg();
? }