Mine

<?php
        $file_name="/home/jupiter/iMovies/" . str_replace("..","",$_REQUEST['f']);
        $file2=$_REQUEST['f'];
        if(is_file($file_name)) {
               $fp = fopen($file_name, 'rb');
               header("Content-Type: application/zip");
               header("Content-Length: " . filesize($file_name));
               header("Content-Disposition: inline; filename=$file2");
               fpassthru($fp);
               fclose($fp);
               exit;

        } else {
               echo "Sorry, can't find file" . $_REQUEST['f'];
        }
?>