اینم یه کلاس برای این کار
error_reporting (0);
class Download_file
{
var $df_dirpath = "";
var $df_contenttype = "";
var $df_contentdisposition = "attachment";
var $df_filename = "";
var $df_size = 0;
var $df_filefermisition = 0;
function Download_file($path, $file_name)
{
if (($path) && ($file_name))
{
$this->fileExsit($path, $file_name);
$this->fileInfo();
$this->fileType();
$this->init();
}
else
{
exit();
}
}
function init()
{
ob_start();
$this->download();
ob_end_flush();
ob_end_clean();
$this->endExcute();
}
// file exsit or not
function fileExsit($path, $file_name)
{
clearstatcache() ;
$path = trim(stripslashes($path));
if (is_dir($path))
{
$this->df_dirpath = $path . "/";
}
else
{
echo "The requested File <font size = 4 color ='red'><u>$file_name</u></font> was not found on this server.";
$this->df_dirpath = NULL;
exit();
}
$file_name = trim(stripslashes($file_name));
$temp_fpath = $this->df_dirpath . $file_name;
if (file_exists($temp_fpath))
{
$this->df_filename = $temp_fpath;
}
else
{
echo "The requested File <font size = 4 color ='red'><u>$file_name</u></font> was not found on this server.";
$this->df_filename = NULL;
exit();
}
}
// Get file info
function fileInfo()
{
if (($this->df_dirpath) && ($this->df_filename))
{
$this->df_size = filesize($this->df_filename);
$this->df_filefermisition = substr(decoct(fileperms($this->df_filename)), -1);
}
else
{
$this->df_size = 0;
$this->df_filefermisition = 0;
exit();
}
}
// Get file type
function fileType()
{
if(($this->df_dirpath) && ($this->df_filename))
{
$fname = basename($this->df_filename);
$ext = substr($this->df_filename ,-3 );
switch( $ext ){
case "pdf": $ctype="application/pdf"; break;
case "exe": $ctype="application/octet-stream"; break;
case "zip": $ctype="application/zip"; break;
case "doc": $ctype="application/msword"; break;
case "xls": $ctype="application/vnd.ms-excel"; break;
case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
case "gif": $ctype="image/gif"; break;
case "png": $ctype="image/png"; break;
case "jpg": $ctype="image/jpg"; break;
case "xml": $ctype="text/xml"; break;
default : $ctype="application/force-download";
}
$this->df_contenttype = $ctype;
}
}
//Download file
function download()
{
session_cache_limiter();
if (($this->df_filename) && ($this->df_contenttype) && ($this->df_filefermisition) > 4)
{
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type:" .$this->df_contenttype);
header("Content-Disposition: ".$this->df_contentdisposition."; filename=".basename($this->df_filename));
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$this->df_size);
$fp = readfile($this->df_filename);
return $fp;
}
else
{
echo "The requested File Type <font size = 4 color ='red'><u>$this->df_filename</u></font> was not Valied on this server." ;
}
}
//End program and clean the data
function endExcute()
{
clearstatcache();
$this->df_dirpath = "";
$this->df_contenttype = "";
$this->df_contentdisposition = "attachment";
$this->df_filename = "";
$this->df_size = 0;
$this->df_filefermisition = 0;
unset($this->df_dirpath, $this->df_contenttype, $this->df_contentdisposition, $this->df_filename, $this->df_size, $this->df_filefermisition);
}
}
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