``` $cookie=\Yii::$app->response->cookies; $data=[ 'name'=>'user','value'=>'zhang san' ]; //设置cookie $cookie->add(new Cookie($data)); //删除数据 //$cookie->remove('user'); //读取数据 $request=\Yii::$app->request; //20为默认值 $user=$request->cookies->getValue('user',20); echo $user.'<br>'; ```