PHPÎļþÏÂÔØÀà

作者:网络 来源:佚名 更新时间:2008-02-05 点击:
  • ±¾îäà´ô´óú°¢àïî÷î÷web¿ª·¢éççøhttp://www.html.org.cnêõ¼¯õûàí£¬»¶ó­·ãîê¡£
  • <?
    //====================================================
    //                filename:download.class.php
    //                summary: îä¼þïâôøàà
    //                author: feifengxlq
    //      email:[email protected]
    //                createtime: 2005-7-19     
    //                lastmodifed:
    //                copyright (c)2005 xlq.100steps.net  [email][email protected][/email]
    //   ê¹óã·¶àý£º
    // $download=new download('php,exe,html',false);
    //  if(!$download->downloadfile($filename))
    //  {
    //    echo $download->geterrormsg();
    //  }      
    //====================================================
    class download{
      var $debug=true;
      var $errormsg='';
      var $filter=array();
      var $filename='';
      var $minetype='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( $this->filename ) );
          header( "content-dispositionattachmentfilename=\"$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.'²»ôêðíïâôø£¡';
                     if($this->debug) exit($filename.'²»ôêðíïâôø£¡') ;
                     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
                     {
                        $this->errormsg.='»ñè¡'.$filename.'îä¼þààðí걺ò·¢éú´íî󣬻òõß²»´æôúô¤¶¨îä¼þààðíäú';
                            if($this->debug) exit('»ñè¡îä¼þààðí³ö´í');
                            return false;
                     }
               } 
            }else
            {
              $this->errormsg.=$filename.'²»´æôú!';
              if($this->debug) exit($filename.'²»´æôú!') ;
              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";
      }
    }
    ?>