Problemas al forzar descarga en PHP

[mm55]

Si claro, aqui esta...
Gracias
[code]
<?
header('Pragma: Public');
header('Expires: 0');
header('Content-type: '.mime_content_type($file));
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private',false);
header('Content-disposition: attachment; filename='.basename($file));
header('Content-transfer-encoding: binary');
header('Content-length:'.filesize($file));
@readfile($file);
?>
[code]