session; if(isset($_GET['pid']) && (int)$_GET['pid']>0){ $session->set('pid',(int)$_GET['pid']); } $pid = $session->get('pid'); if(!$pid){ return Yii::$app->response->redirect(['index/index']); } } //主界面 public function actionIndex() { return $this->render('@app/views/layouts/dev',[]); } }