use Yii; Yii::$app->params[‘params‘];
$this->getView()->title = "page title";
$controllerID = Yii::$app->controller->id;
$actionID = Yii::$app->controller->action->id;
YII2 开发参照
原文：https://www.cnblogs.com/shanhuhai/p/12085365.html
