diff --git a/lib/db.cls.php b/lib/db.cls.php
index bf1ab2d8..6fb59a12 100755
--- a/lib/db.cls.php
+++ b/lib/db.cls.php
@@ -35,7 +35,7 @@ public function connect($host = DH, $dbuser = DU, $password = DP, $dbname = DB,
     {
         $dbcode = str_replace('-', '', $dbcode);
         if (!$this->linkid) {
-            $this->linkid = mysql_connect($host, $dbuser, $password) or die('Mysql数据库连接失败，请检查数据库用户名和密码是否正确！');
+            $this->linkid = mysql_connect($host, $dbuser, $password) or exit('Mysql数据库连接失败，请检查数据库用户名和密码是否正确！');
         }
         $version = $this->getVersion();
 
@@ -45,7 +45,7 @@ public function connect($host = DH, $dbuser = DU, $password = DP, $dbname = DB,
                 mysql_query("SET sql_mode=''", $this->linkid);
             }
         } else {
-            die('Mysql版本过低，请更换5.0以上版本！');
+            exit('Mysql版本过低，请更换5.0以上版本！');
         }
         mysql_select_db($dbname, $this->linkid);
     }
diff --git a/lib/include/alipay.func.php b/lib/include/alipay.func.php
index a66c3ec6..4347512a 100755
--- a/lib/include/alipay.func.php
+++ b/lib/include/alipay.func.php
@@ -172,7 +172,7 @@ function charsetEncode($input, $_output_charset, $_input_charset)
     } elseif (function_exists('iconv')) {
         $output = iconv($_input_charset, $_output_charset, $input);
     } else {
-        die('sorry, you have no libs support for charset change.');
+        exit('sorry, you have no libs support for charset change.');
     }
 
     return $output;
@@ -198,7 +198,7 @@ function charsetDecode($input, $_input_charset, $_output_charset)
     } elseif (function_exists('iconv')) {
         $output = iconv($_input_charset, $_output_charset, $input);
     } else {
-        die('sorry, you have no libs support for charset changes.');
+        exit('sorry, you have no libs support for charset changes.');
     }
 
     return $output;
diff --git a/lib/include/phpqrcode.php b/lib/include/phpqrcode.php
index 53a06c9b..e064ea92 100755
--- a/lib/include/phpqrcode.php
+++ b/lib/include/phpqrcode.php
@@ -1636,7 +1636,7 @@ public function convertData()
                 $this->setVersion($ver);
             }
 
-            for (; ;) {
+            for (;;) {
                 $bits = $this->createBitStream();
 
                 if ($bits < 0) {
diff --git a/lib/init.cls.php b/lib/init.cls.php
index 46d7c470..e78132b3 100755
--- a/lib/init.cls.php
+++ b/lib/init.cls.php
@@ -142,7 +142,7 @@ public function run()
             $run = new action($this);
             $run->display();
         } else {
-            die('error:Unknown app to load, the app is '.$app);
+            exit('error:Unknown app to load, the app is '.$app);
         }
     }
 
diff --git a/lib/tpl.cls.php b/lib/tpl.cls.php
index c7a4cbdf..82c9a7d7 100755
--- a/lib/tpl.cls.php
+++ b/lib/tpl.cls.php
@@ -67,7 +67,7 @@ public function readTpl($file)
                 return $this->fl->readFile($file);
             }
 
-            die('The template not fount which name is '.$file);
+            exit('The template not fount which name is '.$file);
         }
 
         //判断字符值是否存在，并返回指定类型的值
@@ -500,7 +500,7 @@ public function readTpl($file)
                 return $this->fl->readFile($file);
             }
 
-            die('The template not fount which name is '.$file);
+            exit('The template not fount which name is '.$file);
         }
 
         //判断字符值是否存在，并返回指定类型的值
diff --git a/lib/wechat.cls.php b/lib/wechat.cls.php
index 074afd08..a9c4cef5 100755
--- a/lib/wechat.cls.php
+++ b/lib/wechat.cls.php
@@ -112,16 +112,16 @@ public function valid($return = false)
         }
         if ($echoStr) {
             if ($this->checkSignature()) {
-                die($echoStr);
+                exit($echoStr);
             }
 
-            die('no access');
+            exit('no access');
         }
         if ($this->checkSignature()) {
             return true;
         }
 
-        die('no access');
+        exit('no access');
 
         return false;
     }