PHP 第三方支付实现

/**
 * 提交退款
 * @param null $amount  订单金额
 * @param $refund_money   退款金额
 * @param $orderid   订单号
 * @param $refund_sn    退款订单号
 * @param $type    支付类型，alipay,wechat
 * @param null $remark   退款原因
 * @param null $notifyurl   通知url
 * @param null $returnurl   跳转url
 * @param string $method    支付方法
 * @return null|\Yansongda\Supports\Collection|static
 */
public static function submitRefund($amount = null, $refund_money, $orderid, $refund_sn, $type, $remark = null, $notifyurl = null, $returnurl = null, $method = 'app')
{
    if (!is_array($amount)) {
        $params = [
            'amount' => $amount,
            'type' => $type,
            'notifyurl' => $notifyurl,
            'returnurl' => $returnurl,
            'method' => $method
        ];
    } else {
        $params = $amount;
    }

    $type = isset($params['type']) && in_array($params['type'], ['alipay', 'wechat']) ? $params['type'] : 'wechat';
    $request = request();
    $notifyurl = isset($params['notifyurl']) ? $params['notifyurl'] : $request->root(true) . '/addons/epay/index/' . $type . 'notify';
    $returnurl = isset($params['returnurl']) ? $params['returnurl'] : $request->root(true) . '/addons/epay/index/' . $type . 'return/out_trade_no/' . $orderid;

    $config = Service::getConfig($type);
    $config['notify_url'] = $notifyurl;
    $config['return_url'] = $returnurl;
    $result = null;

    $order_data = [
        'out_trade_no' => $orderid
    ];

    if ($type == 'wechat') {
        $pay = Pay::wechat($config);
        $total_fee = $amount * 100;
        $refund_fee = $refund_money * 100;
        $order_data = array_merge($order_data, [
            'out_refund_no' => $refund_sn,
            'total_fee' => $total_fee,
            'refund_fee' => $refund_fee,
            'refund_desc' => $remark,
            'type' => $method,
        ]);
    } else {
        $pay = Pay::alipay($config);
        $order_data = array_merge($order_data, [
            'out_request_no' => $refund_sn,
            'refund_amount' => $refund_money,
        ]);
    }

    $result = $pay->refund($order_data);

    if ($result instanceof \Symfony\Component\HttpFoundation\RedirectResponse) {
        $result = RedirectResponse::create($result->getTargetUrl());
    } elseif ($result instanceof \Symfony\Component\HttpFoundation\Response) {
        $result = Response::create($result->getContent());
    } elseif ($result instanceof \Yansongda\Supports\Collection) {
        $result = Collection::make($result->all());
    }

    return $result;
}