PHP download header

<?php
$filename = $_GET['file'];
$path = "../files/dokumenty/";
echo $file = $path.$filename;

// Send file headers
header('Content-Type: application/octet-stream');
header("Content-Disposition: attachment; filename=$file");
header('Content-Transfer-Encoding: binary');
// load the file to send:
readfile('$file');
?>

header("Content-Disposition: attachment; filename=$filename");

readfile($file);