frontend\controllers\CartController::actionClear PHP Method

    public function actionClear()
    {
        $storeId = (int) Yii::$app->request->post('storeId');
        $output = ['status' => 'ok'];
        Yii::$app->user->identity->clearCartGoods($storeId);
        Yii::$app->response->format = Response::FORMAT_JSON;
        return $output;
    }