diff --git a/index.php b/index.php
index 6d7b9d8..94285b7 100644
--- a/index.php
+++ b/index.php
@@ -7,7 +7,7 @@ if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') {
     $http = "https://";
 }
 $base_dir = $http . $_SERVER['HTTP_HOST'] . dirname($_SERVER['SCRIPT_NAME']);
-if(substr($base_dir,-1,1)=="/"){$base_dir=substr($base_dir,0,str_len($base_dir)-1);}
+if(substr($base_dir,-1,1)=="/"){$base_dir=substr($base_dir,0,-1);}
 $user = array("chate.store"); // 用户名，可多个
 $pwd = array("123456"); // 密码，跟用户对应，请记得更换
 if (isset($_GET['type'])) {
@@ -114,7 +114,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['file'])) {
     <meta name="description" content="SIW图床-基于PHP的图床服务">
     <meta name="keywords" content="SIW图床,PHP图床,图床">
     <link rel="stylesheet" href="http://cdn.atusu.cn/202410/bootstrap.min.css">
-    <script src="http://cdn.atusu.cn/202410/jquery.min.js"></script>
+    <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
     <title>SIW图床-基于PHP的图床服务</title>
     <style>
         html, body {