微信支付notify.php

<?php
// 引入微信支付SDK
require_once 'wxpay/WxPay.Api.php';
require_once 'wxpay/WxPay.Notify.php';

class PayNotifyCallBack extends WxPayNotify
{
    // 查询订单
    public function QueryOrder($transaction_id)
    {
        $input = new WxPayOrderQuery();
        $input->SetTransaction_id($transaction_id);
        $result = WxPayApi::orderQuery($input);
        if (array_key_exists("return_code", $result)
            && array_key_exists("result_code", $result)
            && $result["return_code"] == "SUCCESS"
            && $result["result_code"] == "SUCCESS") {
            return true;
        }
        return false;
    }

    // 处理通知
    public function NotifyProcess($data, &$msg)
    {
        $notfiyOutput = array();

        if (!array_key_exists("transaction_id", $data)) {
            $msg = "输入参数不正确";
            return false;
        }

        // 查询订单，判断订单真实性
        if (!$this->QueryOrder($data["transaction_id"])) {
            $msg = "订单查询失败";
            return false;
        }

        // 处理业务逻辑
        // TODO: 更新订单状态等操作

        $notfiyOutput["return_code"] = "SUCCESS";
        $notfiyOutput["return_msg"] = "OK";
        return $notfiyOutput;
    }
}

$notify = new PayNotifyCallBack();
$notify->Handle(false);
?>