Testlistener for phpunit notifying on error

TestListener.php

<?php
class TestListener implements PHPUnit_Framework_TestListener
{
    protected $errors;
    protected $error_count;

    public function addError(PHPUnit_Framework_Test $test, Exception $e, $time)
    {
        $this->error_count++;
    }

    public function addFailure(PHPUnit_Framework_Test $test, PHPUnit_Framework_AssertionFailedError $e, $time)
    {
        $this->error_count++;
    }

    public function addIncompleteTest(PHPUnit_Framework_Test $test,Exception $e,$time)
    {
    }

    public function addSkippedTest(PHPUnit_Framework_Test $test,Exception $e,$time)
    {
    }

    public function startTest(PHPUnit_Framework_Test $test)
    {
    }

    public function endTest(PHPUnit_Framework_Test $test, $time)
    {
    }

    public function startTestSuite(PHPUnit_Framework_TestSuite $suite)
    {
    }

    public function endTestSuite(PHPUnit_Framework_TestSuite $suite)
    {
    }

    public function __destruct()
    {
        exec('svn info ' . dirname(__FILE__) . '/../', $output);
        $msg = 'Build had ' . $this->error_count . ' errors. Please fix them' . "\n\n";
        $msg .= implode("\n", $output);
        if ($this->error_count > 0){
            $this->notifo('project', 'Build failed', $msg, 'http://example.org', 'user', 'api_secret');
        }
    }

    function notifo($label, $title, $msg, $uri, $user, $pass)
    {
        $opts = array(
            'http' => array(
                'method' => "POST",
                'header' => "Authorization: Basic ".base64_encode($user.":".$pass)."\r\n".
                    "Content-type: application/x-www-form-urlencoded\r\n",
                'content' => http_build_query(array('label' => $label, 'title' => $title, 'msg' => $msg, 'uri' => $uri))
            )
        );
        $context = stream_context_create($opts);
        file_get_contents('https://api.notifo.com/v1/send_notification', false, $context);
    }
}