php/www/protected/modules/common/controllers/ActivityController.php

<?php
/**
 * Created by PhpStorm.
 * User: PHP
 * Date: 2016/10/9
 * Time: 14:44
 */
class ActivityController extends CController  {
    //扫码获取代金券
    public function actionGetCoupon() {
        echo "123";
        $coupon_id = Yii::app()->request->getParam('coupon_id','');//获取代金券id
        var_dump( $coupon_id);


    }

}