Home::index PHP Method

    public function index()
    {
        $this->events->trigger('home_controller');
        $data = array();
        $this->template->build('home', $data);
    }

 /**
  * "Start" the application:
  * Analyze the URL elements and calls the according controller/method or the fallback
  */
 public function __construct()
 {
     // create array with URL parts in $url
     $this->splitUrl();
     // check for controller: no controller given ? then load start-page
     if (!$this->url_controller) {
         require APP . 'controller/home.php';
         $page = new Home();
         $page->index();
     } elseif (file_exists(APP . 'controller/' . $this->url_controller . '.php')) {
         // here we did check for controller: does such a controller exist ?
         // if so, then load this file and create this controller
         require APP . 'controller/' . $this->url_controller . '.php';
         $this->url_controller = new $this->url_controller();
         if (method_exists($this->url_controller, $this->url_action)) {
             if (!empty($this->url_params)) {
                 call_user_func_array(array($this->url_controller, $this->url_action), $this->url_params);
             } else {
                 $this->url_controller->{$this->url_action}();
             }
         } else {
             if (strlen($this->url_action) == 0) {
                 // no action defined: call the default index() method of a selected controller
                 $this->url_controller->index();
             } else {
                 header('location: ' . URL . 'error');
             }
         }
     } else {
         header('location: ' . URL . 'error');
     }
 }