File Manager

<?php
	// This script accepts an ID and converts it to the thumbnail name.
	// It then streams the data to the browser from the file

	$image_id = isset($_GET['id']) ? $_GET['id'] : false;

	if ($image_id === false) {
		header("HTTP/1.1 500 Internal Server Error");
		echo "No ID";
		exit(0);
	}

	$thumb = '../../' . base64_decode(urldecode($image_id));

	if ( !file_exists($thumb) )
	{
		$thumb = 'images/zerobyte.gif';
	}
	
	$pos = strrpos($thumb, '.');
	$type = strtolower(substr($thumb, $pos + 1));
	switch($type) {
		case 'jpg':
			header("Content-type: image/jpeg");
			break;
		case 'png':
			header("Content-type: image/png");
			break;
		case 'gif':
			header("Content-type: image/gif");
			break;
		default:
			header("Content-type: image/gif");
			$thumb = 'images/error.gif';
			break;
	}

	header("Content-length: " . filesize($thumb));
	flush();
	readfile($thumb);
	exit(0);
?>