小程序支付回调文件丢失

extend/service/RoutineNotify.php

@@ -0,0 +1,58 @@
+<?php
+namespace service;
+
+/**
+ * 小程序支付异步通知
+ * Class RoutineNotify
+ * @package service
+ */
+class RoutineNotify
+{
+    public static function options(){
+        $payment = SystemConfigService::more(['routine_appId','routine_appsecret','pay_routine_mchid','pay_routine_key']);
+        return $payment;
+    }
+    public static function notify()
+    {
+        $config = self::options();
+        $postStr = file_get_contents('php://input');
+        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
+        if ($postObj === false) die('parse xml error');
+        if ($postObj->return_code != 'SUCCESS') die($postObj->return_msg);
+        if ($postObj->result_code != 'SUCCESS') die($postObj->err_code);
+        $arr = (array)$postObj;
+        unset($arr['sign']);
+        if (self::getSign($arr, $config['pay_routine_key']) == $postObj->sign) {
+            echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
+            return $arr;
+        }
+    }
+    /**
+     * 获取签名
+     */
+    public static function getSign($params, $key)
+    {
+        ksort($params, SORT_STRING);
+        $unSignParaString = self::formatQueryParaMap($params, false);
+        $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
+        return $signStr;
+    }
+    protected static function formatQueryParaMap($paraMap, $urlEncode = false)
+    {
+        $buff = "";
+        ksort($paraMap);
+        foreach ($paraMap as $k => $v) {
+            if (null != $v && "null" != $v) {
+                if ($urlEncode) {
+                    $v = urlencode($v);
+                }
+                $buff .= $k . "=" . $v . "&";
+            }
+        }
+        $reqPar = '';
+        if (strlen($buff) > 0) {
+            $reqPar = substr($buff, 0, strlen($buff) - 1);
+        }
+        return $reqPar;
+    }
+}