hola amigo, yo lo haria asi
Código PHP:
Ver original<?
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("content-Type: application/force-download"); header("Content-type: application/octet-stream"); header("content-Type: application/download");
header("Content-disposition: attachment; filename={$path}"); //$path debe ser la ruta absoluta al file header("content-Transfer-Encoding: binary"); ?>