发个文件下载类

我不是鱼
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1^# 我不是鱼发表于2006-09-01
发个文件下载类

[复制到剪切板]
CODE:
<?

//====================================================

//                FileName:download.class.php

//                Summary: 文件下载类

//                Author: feifengxlq

//      Email:[email protected]

//                CreateTime: 2005-7-19     

//                LastModifed:

//                copyright (c)2005 xlq.100steps.net  [email][email protected][/email]

//   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='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";

  }

}

?> ;
如履薄冰
wudeyong
UID: 421
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2^# wudeyong 发表于2006-09-18
可以举个例子吗
小弟不会用
??
奇将射天狼
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3^# 奇将射天狼发表于2007-09-04
同感，我也不知道怎么用！
edisonwu
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4^# edisonwu 发表于2008-02-22
这样的啊
lxydyx
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5^# lxydyx 发表于2008-03-21
:victory: :victory: