<?php
if (!defined('DEDEINC')) exit ('dedebiz');
//手动加载入口文件
include "../include.php";
//准备公众号配置参数
$config = include "./alipay.php";
//原商户订单号
$out_trade_no = '56737188841424';
//申请退款金额
$refund_fee = '1.00';
try {
    //实例支付对象
    //$pay = We::AliPayApp($config);
    //$pay = new \AliPay\App($config);
    $pay = \AliPay\App::instance($config);
    //参考链接：https://docs.open.alipay.com/api_1/alipay.trade.refund
    $result = $pay->refund($out_trade_no, $refund_fee);
    echo '<pre>';
    var_export($result);
} catch (Exception $e) {
    echo $e->getMessage();
}
?>