dl.php

<?php
// Copyright (c) Claus Tondering.  E-mail: claus@ezer.dk.
//
// This code is distributed under an MIT License:
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
// associated documentation files (the "Software"), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge, publish, distribute,
// sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

if (isset($_GET['file'])) {
    header("Content-Type: application/octet-stream");
    header("Content-Length: " . filesize($_GET['file']));
    header("Content-Disposition: attachment; filename=\"{$_GET['file']}\"");

    $filename = $_GET['file'];
    $handle = fopen($filename, "r");


    while ($cont = fread($handle, 100000)) {
        print $cont;
        set_time_limit(30);
    }
    fclose($handle);
}
?>