Send alert to HipChat with Behat test fails

notifyHipchat.php

<?php
/**
* Send an alert to HipChat when a test fails
*
* @AfterStep
*/
public function notifyHipchat(Behat\Behat\Event\StepEvent $event) 
{
    if ($event->getResult() === Behat\Behat\Event\StepEvent::FAILED) {
        $step = $event->getStep();
        $feature = $step->getParent()->getFeature()->getTitle();
        $scenario = $step->getParent()->getTitle();
        $step = $step->getType() . ' ' . $step->getText();

        $message = 
            '<h3>Whoopsie! There was a test failure!</h3>' . "<br>" .
            '<strong>Domain:</strong> ' . $this->getMinkParameter('base_url') . "<br>" .
            '<strong>Feature/Test:</strong> ' . $feature . "<br>" .
            '<strong>Scenario:</strong> ' . $scenario . "<br>" .
            '<strong>Step:</strong> ' . $step;

        $hipchat_url = 'https://api.hipchat.com/v1/rooms/message?auth_token='.getenv('HIPCHAT_AUTH_TOKEN').'&room_id='.getenv('HIPCHAT_ROOM_ID').'&from=Behat&color=red&notify=1&message='.urlencode($message);
        $hipchat_message = file_get_contents($hipchat_url);
    }
}