Se abbiamo un sito web che supporta php possiamo ricorrere questo semplice stratagemma per forzare il download di php.
Creiamo un nuovo file intitolato "download.php".
Apriamolo con il blocco note e incolliamo il seguente testo :
<?php
$filename = $_GET['file'];
// required for IE, otherwise Content-disposition is ignored
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
// addition by Jorg Weske
$file_extension = strtolower(substr(strrchr($filename,"."),1));
if( $filename == "" )
{
echo "ERROR: download file NOT SPECIFIED. USE force-download.php?file=filepath";
exit;
} elseif ( ! file_exists( $filename ) )
{
echo "ERROR: File not found. USE force-download.php?file=filepath";
exit;
};
switch( $file_extension )
{
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 "jpeg":
case "jpg": $ctype="image/jpg"; break;
default: $ctype="application/force-download";
}
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Type: $ctype");
// change, added quotes to allow spaces in filenames, by Rajkumar Singh
header("Content-Disposition: attachment; filename=\"".basename($filename)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".filesize($filename));
readfile("$filename");
exit();
?>
Addeso, caricate il file "download.php" sul vostro sito.
Per scaricare un file , basta che creiate un collegamento al file "download.php" e aggiungete "?file=url" dove url é l' indirizzo del file da scaricare.
Ecco un esempio di link corretto :
http://www.sito.com/download.php?file=ebook/divina-commedia.pdf