lokielse/omnipay-alipay 即时到账退款

　　

       使用有密退款
       $gateway = Omnipay::create('Alipay_LegacyExpress');
        $gateway->setSignType($sign_type); 
        $gateway->setReturnUrl($return_url);
        $gateway->setNotifyUrl($notify_url);
        $gateway->setSellerEmail($seller_email);
        $gateway->setPartner($partner);
        $gateway->setKey($key); 
        $data = [
                'refund_date' => date('Y-m-d H:i:s'),
                "seller_user_id"  => trim($seller_id),
                'batch_no'=> date('Ymd') . substr($r_order['third_part_order_id'], 8),
                'batch_num' => 1,//退款笔数与refund_items数组中保持一致
                '_input_charset' => 'UTF-8',
                'refund_items'=> [
                    [
                        'out_trade_no' => $r_order['third_part_order_id'],
                        'amount' => $r_order['amount']/100.0,
                        'reason' => 'Userrefund'
                    ]
                ],
            ];    
         $request = $gateway->refund($data);
         $response = $request->send();
         $url = $response->getRedirectUrl();#在浏览器中打开此url就可以看到有密退款界面

此库中并没有提供即时到账无密退款服务 手动添加一把

1在LegacyAppGateway.php文件中加一个方法
　　 public function refundNoPwd(array $parameters = [])
    {
        return $this->createRequest(LegacyRefundNoPwdRequest::class, $parameters);
    }

2复制一份LegacyRefundRequest.php文件在当前目录下重命名为
LegacyRefundNoPwdRequest.php
3.把LegacyRefundNoPwdRequest.php文件中的
protect $server = 'refund_fastpay_by_platform_pwd';
改为
protect  $server='refund_fastpay_by_platform_nopwd';

ok其他后续操作同有密退款 只需把生成的url用curl发出即可收到支付宝的返回值