diff --git a/webapp/controller/RechargeController.class.php b/webapp/controller/RechargeController.class.php
index 01fe7c1..6b46155 100644
--- a/webapp/controller/RechargeController.class.php
+++ b/webapp/controller/RechargeController.class.php
@@ -339,11 +339,7 @@ class RechargeController
             'orderid' => $_REQUEST['orderid'],
             'amount' => $_REQUEST['amount'],
         );
-        $oristr = 'account_id=' + $_REQUEST['account_id'] +
-            '&goodsid=' + $_REQUEST['goodsid'] +
-            '&orderid=' + $_REQUEST['orderid'] +
-            '&amount=' + $_REQUEST['amount'] +
-            ':' + $_REQUEST['timestamp'] + 'NrN3zkVOzXF1vRzUc9eJM9ZKRO5eLooD';
+        $oristr = 'account_id='.$_REQUEST['account_id'].'&goodsid='.$_REQUEST['goodsid'].'&orderid='.$_REQUEST['orderid'].'&amount='.$_REQUEST['amount'].':'.$_REQUEST['timestamp'].'NrN3zkVOzXF1vRzUc9eJM9ZKRO5eLooD';
         // $sign = phpcommon\md5Sign($params, 'NrN3zkVOzXF1vRzUc9eJM9ZKRO5eLooD', $_REQUEST['timestamp']);
         $sign = md5($oristr);
         error_log('src:'.$oristr.'|'.$sign.'|'.$_REQUEST['sign']);