1. 創建過濾器目錄 `app/components` 2. 創建過濾器文件：`ActionTimeFilter.php` ~~~ <?php? namespace?app\components;??---命名空間要設置 use?Yii; use?yii\base\ActionFilter; class?ActionTimeFilter?extends?ActionFilter? { private?$_startTime; public?function?beforeAction($action) { $this->_startTime?=?microtime(true); return?parent::beforeAction($action); } public?function?afterAction($action,$result) { $time?=?microtime(true)-$this->_startTime; echo?$time; return?parent::afterAction($action,$result); } } ~~~ 3. 控制器中使用過濾器 ~~~ namespace?app\controllers; use?Yii; use?app\models\Country; use?app\models\CountrySearch; use?yii\web\Controller; use?yii\web\NotFoundHttpException; use?yii\filters\VerbFilter; use?app\components\ActionTimeFilter;??---?要引入命名空間 use?yii\caching\FileCache; use?app\models\User; /** ?*?CountryController?implements?the?CRUD?actions?for?Country?model. ?*/ class?CountryController?extends?Controller { public?$defaultAction?=?'index'; ????public?function?behaviors() ????{ ????????return?[ ????????????'verbs'?=>?[ ????????????????'class'?=>?VerbFilter::className(), ????????????????'actions'?=>?[ ????????????????????'delete'?=>?['post'], ????????????????], ????????????], ????????????[ ????????????????'class'=>'app\components\ActionTimeFilter', ????????????????'only'=>['index','test'] ????????????], ????????]; ????} ~~~