think\Controller::display PHP Method

    protected function display($content = '', $vars = [], $replace = [], $config = [])
    {
        return $this->view->display($content, $vars, $replace, $config);
    }

 public function display($tpl = '')
 {
     $P = $this->vhook_tpl . $tpl . '.php';
     if (file_exists($P)) {
         parent::display($P);
     }
 }