Hepling out :)

<?php
require_once("src/facebook.php");

$app_id = "228073413942115";
$app_secret = "460d2e1ffd0b4cc6b5cb480d53f60d6e";
$canvas_page = "https://apps.facebook.com/roblewtest/" .$app_id;

$facebook = new Facebook(array(
        'appId' => $app_id,
        'secret' => $app_secret,
        'cookie' => true,
));

if ($facebook->getUser() == false) {
    echo("<script> top.location.href='" . $facebook->getLoginUrl(); . "'</script>");
}

$result = $facebook->api('/me?fields=id');

var_dump($result);
   ?>