diff --git a/application/admin/view/common/meta.html b/application/admin/view/common/meta.html
index f6c276c3..64bcbafa 100644
--- a/application/admin/view/common/meta.html
+++ b/application/admin/view/common/meta.html
@@ -13,11 +13,6 @@
 <link href="__CDN__/assets/css/skins/{$Think.config.fastadmin.adminskin|htmlentities}.css?v={$Think.config.site.version|htmlentities}" rel="stylesheet">
 {/if}
 
-<!-- HTML5 shim, for IE6-8 support of HTML5 elements. All other JS at the end of file. -->
-<!--[if lt IE 9]>
-  <script src="__CDN__/assets/js/html5shiv.js"></script>
-  <script src="__CDN__/assets/js/respond.min.js"></script>
-<![endif]-->
 <script type="text/javascript">
     var require = {
         config:  {$config|json_encode}
diff --git a/application/common/controller/Backend.php b/application/common/controller/Backend.php
index e49dd527..97ae42e5 100644
--- a/application/common/controller/Backend.php
+++ b/application/common/controller/Backend.php
@@ -581,7 +581,7 @@ class Backend extends Controller
                 } else {
                     $result = array_intersect_key(($item instanceof Model ? $item->toArray() : (array)$item), array_flip($fields));
                 }
-                $result['pid'] = (int)($item['pid'] ?? $item['parent_id'] ?? 0);
+                $result['pid'] = isset($item['pid']) ? $item['pid'] : (isset($item['parent_id']) ? $item['parent_id'] : 0);
                 // 修改为安全的htmlentities调用，兼容php8+版本
                 $result = array_map(function($value) {
                     return $value === null ? '' : htmlentities((string)$value);
diff --git a/application/index/view/common/meta.html b/application/index/view/common/meta.html
index 365cb20d..a766ec76 100644
--- a/application/index/view/common/meta.html
+++ b/application/index/view/common/meta.html
@@ -14,11 +14,6 @@
 
 <link href="__CDN__/assets/css/frontend{$Think.config.app_debug?'':'.min'}.css?v={$Think.config.site.version|htmlentities}" rel="stylesheet">
 
-<!-- HTML5 shim, for IE6-8 support of HTML5 elements. All other JS at the end of file. -->
-<!--[if lt IE 9]>
-  <script src="__CDN__/assets/js/html5shiv.js"></script>
-  <script src="__CDN__/assets/js/respond.min.js"></script>
-<![endif]-->
 <script type="text/javascript">
     var require = {
         config: {$config|json_encode}