PHP download file wrapper

README.md

In the example the directory that contains the script also contains the directory files.

In order to download a file with filename "file.txt" we should call the script like http://domainname/file.php?filename=file.txt .

If the file doesn't exist we will get a "FILE NOT FOUND" message, otherwise we will get the file.

This is a good practice in order to conceal our file true location.

file.php

<?php

$relativepath = "files";

if(isset($_GET['filename']))
{
	$filename = $_GET['filename'];
	$file = $relativepath."/".$filename;
	if (file_exists($file)) {
		header('Content-Description: File Transfer');
		header('Content-Type: application/octet-stream');
		header('Content-Disposition: attachment; filename='.basename($file));
		header('Content-Transfer-Encoding: binary');
		header('Expires: 0');
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Pragma: public');
		header('Content-Length: ' . filesize($file));
		ob_clean();
		flush();
		readfile($file);
		exit;
	}
	else {
		echo "FILE NOT FOUND! :(";
	}
}

?>