php upload and resize image with phpthumnailer

<?php
/**
 * PhpThumb Library Example File
 * 
 * This file contains example usage for the PHP Thumb Library
 * 
 * PHP Version 5 with GD 2.0+
 * PhpThumb : PHP Thumb Library <http://phpthumb.gxdlabs.com>
 * Copyright (c) 2009, Ian Selby/Gen X Design
 * 
 * Author(s): Ian Selby <[email protected]>
 * 
 * Licensed under the MIT License
 * Redistributions of files must retain the above copyright notice.
 * 
 * @author Ian Selby <[email protected]>
 * @copyright Copyright (c) 2009 Gen X Design
 * @link http://phpthumb.gxdlabs.com
 * @license http://www.opensource.org/licenses/mit-license.php The MIT License
 * @version 3.0
 * @package PhpThumb
 * @subpackage Examples
 * @filesource
 */

	require_once './phpthumbnailer/ThumbLib.inc.php';
	
	// create variable and store file name
	$filename  = $_FILES['file_upload']['name'];
	
	// create variable and store temp file name
	$tmpname   = $_FILES['file_upload']['tmp_name'];
	
	// create variable and store path to save file into server
	$storefile = "./upload/".$filename;
	
	// copy file to server
	if($_FILES['file_upload']['name']) {			
		copy($tmpname, $storefile);
		unlink ($tmpname);
		
		try {
			$thumb = PhpThumbFactory::create("./upload/$filename");
			$thumb->adaptiveResize(60, 60);
			$thumb->save("./upload/thumb/$filename");
		}
		catch(Exception $e) { }
	}
?>

<!-- Form upload image -->
<form name="upload" id="upload" action="" enctype="multipart/form-data" method="post">
  <input type="file" name="file_upload" id="file_upload" />
  <input type="submit" name="submit" id="submit" value="submit" />
</form>