PHP文件下载类

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
())
        {
          
$fn array_popexplode‘/’strtr$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’]=“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”
;
  }
}
//   使用范例:
// $download=new download(’php,exe,html’,false);
//  if(!$download->downloadfile($filename))
//  {
//    echo $download->geterrormsg();
//  }  

发表评论

电子邮件地址不会被公开。 必填项已用*标注