From 118d2e9a22ccc745380ebb358b02fbffe29c4a4b Mon Sep 17 00:00:00 2001
From: xia0ta0 <xia0ta0@outlook.com>
Date: Fri, 12 Dec 2014 09:36:14 +0800
Subject: [PATCH]  * code for task#2172.

---
 framework/helper.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/framework/helper.class.php b/framework/helper.class.php
index 75a778ee06..b642c07d87 100644
--- a/framework/helper.class.php
+++ b/framework/helper.class.php
@@ -323,7 +323,7 @@ class helper
         $len  = strlen($string);
         for($i=0; $i<$len; $i++)
         {
-            $c = ord($str[$i]);
+            $c = ord($string[$i]);
             if($c > 128)
             {
                 if(($c >= 254)) return false;
@@ -337,7 +337,7 @@ class helper
                 while($bits > 1)
                 {
                     $i++;
-                    $b=ord($str[$i]);
+                    $b=ord($string[$i]);
                     if($b < 128 || $b > 191) return false;
                     $bits--;
                 }