XMWXC/wechat/WxPay/realpay/refund_wechat.php

<?php
ini_set('date.timezone', 'Asia/Shanghai');
error_reporting(E_ERROR);
require_once "/usr/share/nginx/XMWX/wechat/WxPay/lib/WxPay.Api.php";
require_once 'log.php';
require_once '/usr/share/nginx/XMWX/wechat/Common_fx/Mysql.php';
//初始化日志
$logHandler = new CLogFileHandler("../logs/" . date('Y-m-d') . '.log');
$log = Log::Init($logHandler, 15);

function printf_info($data)
{
    foreach ($data as $key => $value) {
        echo "<font color='#f00;'>$key</font> : $value <br/>";
    }
}
//链接数据库查询需要退款的订单信息
$pdo = conn();
$sql = "select * from order_refund where yet = 0 and PAY_SERIAL_NUMBER<>''";    //PAY_SERIAL_NUMBER：支付串号（商户单号）
$rs = $pdo->query($sql);
$rowset = $rs->fetchAll(PDO::FETCH_ASSOC);
foreach ($rowset as $v) {
    $list[] = $v;
}
//遍历全部订单并退款  此为全额退款  金额不同会退款失败
foreach ($list as $v) {
    $out_trade_no = (string)$v['PAY_SERIAL_NUMBER'];
    $total_fee = (string)$v['price'] * 100;
    $refund_fee = (string)$v['price'] * 100;

    $input = new WxPayRefund();
    $input->SetOut_trade_no($out_trade_no);
    $input->SetTotal_fee($total_fee);
    $input->SetRefund_fee($refund_fee);
    $input->SetOut_refund_no(WxPayConfig::MCHID . date("YmdHis"));
    $input->SetOp_user_id(WxPayConfig::MCHID);
    $rs = WxPayApi::refund($input);
    //退款给成功后设置退款状态位
    if (!isset($rs['err_code'])) {
        $sql = "update order_refund set yet = 1 where order_id =" . $v['order_id'];
        $rs2 = $pdo->exec($sql);
        $info = serialize($rs);//$out_trade_no.'success\n';
    } else {
        $info = $out_trade_no . 'error:' . $rs['err_code'] . '\n';
    }
    success_notify($info);
    echo $info;
}


function success_notify($result)
{
    file_put_contents('./refund_wechat.txt', date("Y-m-d H:i:s") . "  " . $result . PHP_EOL, FILE_APPEND);//订单成功后通知后台日志
}