<?php

use Behat\Mink\Mink,
    Behat\Mink\Session,
    Behat\Mink\Driver\ZombieDriver,
    Behat\Mink\Driver\NodeJS\Server\ZombieServer;

$host       = '127.0.0.1';
$port       = '8124';
$nodeBinary = '/usr/local/bin/node';

$mink = new Mink(array(
    'zombie' => new Session(new ZombieDriver(new ZombieServer(
        $host, $port, $nodeBinary
    ))),
));

$mink->setDefaultSessionName('zombie');

$session = $mink->getSession();
$session->visit('http://example.org');

$page = $session->getPage();
$elem = $page->find('css', 'h1');

echo $elem->getText();