Tester\Runner\Job::getExitCode PHP Method

    public function getExitCode()
    {
        return $this->exitCode;
    }

 public function __construct($path, $args = NULL)
 {
     $this->path = Helpers::escapeArg($path);
     $proc = proc_open("{$this->path} -n {$args} -v", array(array('pipe', 'r'), array('pipe', 'w'), array('pipe', 'w')), $pipes, NULL, NULL, array('bypass_shell' => TRUE));
     $output = stream_get_contents($pipes[1]);
     $this->error = trim(stream_get_contents($pipes[2]));
     if (proc_close($proc)) {
         throw new \Exception("Unable to run '{$path}': " . preg_replace('#[\\r\\n ]+#', ' ', $this->error));
     } elseif (!preg_match('#^PHP (\\S+).*c(g|l)i#i', $output, $matches)) {
         throw new \Exception("Unable to detect PHP version (output: {$output}).");
     }
     $this->version = $matches[1];
     $this->cgi = strcasecmp($matches[2], 'g') === 0;
     $this->arguments = $args;
     $job = new Job(__DIR__ . '/info.php', $this, array('xdebug'));
     $job->run();
     $this->xdebug = !$job->getExitCode();
 }