sign fix

app/Http/Controllers/Wap/Pay/MonthOrderController.php

@@ -317,7 +317,7 @@ class MonthOrderController extends Controller
             return response(XML::build($result));
         }
         $sign = _sign($xml,UserMonthService::MONTH_PAY_KEY);
-        if($sign != $xml['sign']){
+        if(strtoupper($sign) != strtoupper($xml['sign'])){
             Log::info('sign error');
             Log::info('request sign is: '.$xml['sign'].',my sign is :'.$sign);
             $result = ['return_code'=>'fail','return_msg'=>'sign fail'];
@@ -402,7 +402,7 @@ class MonthOrderController extends Controller
         ]);
 
         $sign = _sign($xml,UserMonthService::MONTH_PAY_KEY);
-        if($sign != $xml['sign']){
+        if(strtoupper($sign) != strtoupper($xml['sign'])){
             Log::info('orderCallBackV2 sign error');
             Log::info('orderCallBackV2 request sign is: '.$xml['sign'].',my sign is :'.$sign);
             $result = ['return_code'=>'fail','return_msg'=>'sign fail'];