php下载类

搜鞥都哦

　　源码:
　　<?//====================================================// FileName:download.class.php// Summary: 文件下载类// Author: feifengxlq// Email:feifengxlq@sohu.com// CreateTime: 2005-7-19// LastModifed:// copyright (c)2005 xlq.100steps.net feifengxlq@sohu.com// 使用范例：// $download=new download('php,exe,html',false);// if(!$download->downloadfile($filename))// {// echo $download->geterrormsg();// }//====================================================class download{var $debug=true;var $errormsg='';var $Filter=array();var $filename='';var $mineType='';var $xlq_filetype=array();
　　function __construct($fileFilter='',$isdebug=true){$this->setFilter($fileFilter);$this->setdebug($isdebug);$this->setfiletype();}
　　function setFilter($fileFilter){if(empty($fileFilter)) return ;$this->Filter=explode(',',strtolower($fileFilter));}function setdebug($debug){$this->debug=$debug;}
　　function setfilename($filename){$this->filename=$filename;}
　　function downloadfile($filename){$this->setfilename($filename);if($this->filecheck()){ ini_set('memory_limit', '-1');$fn = array_pop( explode( '/', strtr( $this->filename, '//', '/' ) ) );header( "Pragma: public" );header( "Expires: 0" ); // set expiration timeheader( "Cache-Component: must-revalidate, post-check=0, pre-check=0" );header('Content-Encoding: none');header( "Content-type:".$this->mineType );header( "Content-Length: " . filesize( $this->filename ) );header( "Content-Disposition: attachment; filename=/"$fn/"" );header( 'Content-Transfer-Encoding: binary' );ob_clean();flush();readfile( $this->filename );return true;}else{return false;}}function geterrormsg(){return $this->errormsg;}
　　function filecheck(){$filename=$this->filename;if(file_exists($filename)){$filetype=strtolower(array_pop(explode('.',$filename)));if(in_array($filetype,$this->Filter)){$this->errormsg.=$filename.'不允许下载！';if($this->debug) exit($filename.'不允许下载！') ;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.='获取'.$filename.'文件类型时候发生错误，或者不存在预定文件类型内';if($this->debug) exit('获取文件类型出错');return false;}}}else{$this->errormsg.=$filename.'不存在!';if($this->debug) exit($filename.'不存在!') ;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/vnd.ms-word';$this->xlq_filetype['exe']='application/octet-stream';$this->xlq_filetype['rar']='application/octet-stream';$this->xlq_filetype['js']="javascript/js";$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";}}?>