diff --git a/src/system/extend.func.php b/src/system/extend.func.php
index 177cace8..a27eafa5 100755
--- a/src/system/extend.func.php
+++ b/src/system/extend.func.php
@@ -25,7 +25,7 @@ if (!function_exists('obtaintheme')) {
 function obtaintags($aid, $num = 3)
 {
     global $dsql, $cfg_cmspath, $cfg_rewrite;
-    $tags = '';
+    $newtag = '';
     $query = "SELECT * FROM `#@__taglist` WHERE aid='$aid' LIMIT $num";
     $dsql->Execute('tag', $query);
     while ($row = $dsql->GetArray('tag')) {
@@ -34,9 +34,9 @@ function obtaintags($aid, $num = 3)
         } else {
             $link = $cfg_cmspath."/apps/tags.php?/{$row['tid']}";
         }
-        $tags .= ($tags == '' ? "<a href=\"{$link}\">{$row['tag']}</a>" : "、<a href=\"{$link}\">{$row['tag']}</a>");
+        $newtag .= ($newtag == '' ? "<a href=\"{$link}\">{$row['tag']}</a>" : "、<a href=\"{$link}\">{$row['tag']}</a>");
     }
-    return $tags;
+    return $newtag;
 }
 //提取文档多图片[field:body function='obtainimgs(@me,3)'/]3表示调用文档3张图片，例如：文档模型body字段，列表附加字段添加body，dede:arclist标签调用添加channelid='1' addfields='body'
 function obtainimgs($string, $num)