-
-
- /**
- ** php文件下载类
- **范例:
- $download=new download('php,exe,html',false);
- if(!$download->downloadfile($filename))
- {
- echo $download->geterrormsg();
- }
- * by bbs.it-home.org
- */
- class download{
- var $debug=true;
- var $errormsg='';
- var $Filter=array();
- var $filename='';
- var $mineType='text/plain';
- var $xlq_filetype=array();
function download($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())
- {
- $fn = array_pop( explode( '/', strtr( $this->filename, '\\', '/' ) ) );
- header( "Pragma: public" );
- header( "Expires: 0" ); // set expiration time
- header( "Cache-Component: must-revalidate, post-check=0, pre-check=0" );
- header( "Content-type:".$this->mineType );
- header( "Content-Length: " . filesize( $this->filename ) );
- header( "Content-Disposition: attachment; filename=\"$fn\"" );
- header( 'Content-Transfer-Encoding: binary' );
- 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/msword';
- $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";
- }
- }
- ?>
-
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