[Replicant]

So you got it?

I use this code if the external login code is inside the forum directory.

<?php
define('CSRF_PROTECTION', false);
require_once(__DIR__ . '/includes/vb5/autoloader.php');
vB5_Autoloader::register(__DIR__);
vB5_Frontend_Application::init('config.php');
echo $vbulletin->userinfo['username'];