Jai ceci : <br />
<b>Warning</b>: readfile() [<a href='function.readfile'>function.readfile</a>]: Filename cannot be empty in <b>/home/users/xxx/download.php</b> on line <b>xx</b><br />

 <?php
$chemin1=$_POST['chemin'];
$filename=$_POST['filename'];
header("Content-disposition: attachment; filename=$filename"); 
header("Content-Type: application/force-download"); 
header("Content-Transfer-Encoding: filetype($chemin)\n"); 
header("Content-Length: ".filesize($chemin)); 
header("Pragma: no-cache"); 
header("Cache-Control: must-revalidate, post-check=0, pre-check=0, public"); 
header("Expires: 0"); 
readfile($chemin1); 
?>

header('Content-disposition: attachment; filename='.$filename); 
header('Content-Type: application/force-download'); 
header('Content-Transfer-Encoding: fichier');  
header('Content-Length: '.filesize($cheminfichier)); 
header('Pragma: no-cache'); 
header('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0'); 
header('Expires: 0'); 
readfile($cheminfichier);