php download script not working - php

Question

The below .php script doesn't work for me - it just prints jibberish:
<?php
$path = $_SERVER['DOCUMENT_ROOT']."/rapcDemo/documents/";
$fullPath = $path.$_GET['download_file'];
if ($fd = fopen ($fullPath, "r")) {
$fsize = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ext = strtolower($path_parts["extension"]);
switch ($ext) {
case "pdf":
header("Content-type: application/pdf"); // add here more headers for diff. extensions
header("Content-Disposition: attachment; filename=\"".$path_parts["basename"]."\""); // use 'attachment' to force a download
break;
default;
header("Content-type: application/octet-stream");
header("Content-Disposition: filename=\"".$path_parts["basename"]."\"");
}
header("Content-length: $fsize");
header("Cache-control: private"); //use this to open files directly
while(!feof($fd)) {
$buffer = fread($fd, 2048);
echo $buffer;
}
}
fclose ($fd);
?>
Any ideas what I am doing wrong?

Answer 1

Well... This is the script I use. Maybe it will help.
Main donwload script:
<?php
$path = $_SERVER['DOCUMENT_ROOT']."/rapcDemo/documents/";
$fullPath = $path.$_GET['download_file'];
if(is_file($fullPath)) {
# required for IE
if (ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
# get the file mime type using custom function
$mime = ($try = get_mime($fullPath)) ? $try : "application/octet-stream";
# set headers for download
header('Pragma: public'); // required
header('Expires: 0'); // no cache
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', filemtime($fullPath)) . ' GMT');
header('Cache-Control: private', false);
header('Content-Type: ' . $mime);
header('Content-Disposition: attachment; filename="' . $_GET['download_file']. '"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($fullPath)); // provide file size
header('Connection: close');
readfile($fullPath); // push it out
exit();
}
?>
And this is my get_mime() function:
<?php
function get_mime($url = "") {
if (empty($url))
return FALSE;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$results = explode("\n", trim(curl_exec($ch)));
foreach ($results as $line)
if (strtok($line, ':') == 'Content-Type')
return trim(explode(":", $line)[1]);
return FALSE;
}
?>

Answer 2

Ok! I just found and modified a php script online that works like a charm:)
The link is below:
http://phpsnips.com/579/PHP-download-script-for-Large-File-Downloads