screen/application/index/controller/Payment.php

<?php

namespace app\index\controller;

use addons\epay\library\Service;
use app\common\controller\Frontend;
use app\common\model\MobileOrder;
use think\Db;

/**
 * 第三方登录控制器
 */
class Payment extends Frontend
{
    protected $noNeedLogin='*';

    /**
     * 支付成功回调
     */
    public function notify($type,$order_no)
    {
        $data=Service::checkNotify($type);
        if (!$data) {
            echo '签名错误';
            return;
        }

        $name="pay/$type/{$order_no}";
        user_log($name,compact('type','order_no','data'));
        Db::startTrans();
        $order=MobileOrder::where('order_no',$order_no)->lock(true)->find();
        if(!$order){
            user_log($name,"订单没找到");
            Db::rollback();
            return '订单没找到';
        }
        if($order['pay_time']){
            user_log($name,"订单已支付");
            Db::rollback();
            return '订单已支付';
        }
        $order['pay_time']=time();
        if($type=='wechat'){
            $order['pay_type']=1;
            $order['pay_no']=$data['transaction_id'];
        }else{
            $order['pay_type']=2;
        }
        if(!$order->save()){
            user_log($name,"保存失败");
            Db::rollback();
            return '保存失败';
        }
        Db::commit();

        //你可以在这里你的业务处理逻辑,比如处理你的订单状态、给会员加余额等等功能
        //下面这句必须要执行,且在此之前不能有任何输出
        echo "success";
        return;
    }
}