Determine data directory of Elgg user

<?php 
/**
 * This is just a quick hack to get the data directory for a user
 */

// load engine - this assumes the script has been put in the root directory of Elgg
require_once(dirname(__FILE__) . "/engine/start.php");

global $CONFIG;

// enter the username of the user here
$username = 'henry';

$user = get_user_by_username($username);
if (!$user) {
    echo "unable to get the user $username";
}

$time_created = date('Y/m/d', $user->time_created);

$dir = "{$CONFIG->dataroot}$time_created/$user->guid";

echo "This user's new data directory in 1.7 is $dir";