* Use mb_strpos instead of str_contains.

framework/base/control.class.php

@@ -482,7 +482,7 @@ class baseControl
         $cssExtPath = $this->app->getModuleExtPath($moduleName, 'css');
 
         $clientLang = $this->app->getClientLang();
-        $notCNLang  = !str_contains('|zh-cn|zh-tw|', "|{$clientLang}|");
+        $notCNLang  = mb_strpos('|zh-cn|zh-tw|', "|{$clientLang}|") === false;
 
         $css          = '';
         $devicePrefix = $this->devicePrefix;
@@ -537,7 +537,7 @@ class baseControl
     public function getExtCSS(array $files, string $suffix = ''): string
     {
         $clientLang = $this->app->getClientLang();
-        $notCNLang  = !str_contains('|zh-cn|zh-tw|', "|{$clientLang}|");
+        $notCNLang  = mb_strpos('|zh-cn|zh-tw|', "|{$clientLang}|") === false;
 
         $filePairs = array();
         foreach($files as $cssFile)

framework/base/router.class.php

@@ -2965,7 +2965,7 @@ class baseRouter
          * 忽略该错误：Redefining already defined constructor。
          * Skip the error: Redefining already defined constructor.
          **/
-        if(str_contains($message, 'Redefining')) return true;
+        if(mb_strpos($message, 'Redefining') !== false) return true;
 
         /*
          * 设置错误信息。