From 35fb224cac6375e9395d55fc9b3f54011c888a34 Mon Sep 17 00:00:00 2001
From: "chendl@e-gets.com" <chendl@e-gets.com>
Date: Sun, 6 Sep 2020 18:19:29 +0800
Subject: [PATCH] =?UTF-8?q?fix(dev#27):php=20sdk=20=E9=83=A8=E5=88=86?=
 =?UTF-8?q?=E9=80=80=E6=AC=BE?=
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---
 php/src/Payment/Common/Client.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/php/src/Payment/Common/Client.php b/php/src/Payment/Common/Client.php
index 81aaab0..ffc1893 100644
--- a/php/src/Payment/Common/Client.php
+++ b/php/src/Payment/Common/Client.php
@@ -200,10 +200,11 @@ public function query($outTradeNo){
     /**
      * @param string $outTradeNo
      * @param string $refundAmount
+     * @param string $outRequestNo
      * @return AlipayTradeRefundResponse
      * @throws \Exception
      */
-    public function refund($outTradeNo, $refundAmount){
+    public function refund($outTradeNo, $refundAmount, $outRequestNo = null ){
         $_runtime = [
             "connectTimeout" => 15000,
             "readTimeout" => 15000,
@@ -239,6 +240,7 @@ public function refund($outTradeNo, $refundAmount){
                     ];
                 $bizParams = [
                     "out_trade_no" => $outTradeNo,
+                    "out_request_no" => $outRequestNo, //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传。
                     "refund_amount" => $refundAmount
                     ];
                 $textParams = [];