eZ\Publish\Core\MVC\Symfony\SiteAccess\Matcher\HostElement::getHostElements PHP Method

    private function getHostElements()
    {
        if (isset($this->hostElements)) {
            return $this->hostElements;
        } elseif (!isset($this->request)) {
            return array();
        }
        $elements = explode('.', $this->request->host);
        return $this->hostElements = $elements;
    }