PHP8なのに、str_containsで出来ない…

app/Http/Controllers/Home/Comment.php

@@ -13,7 +13,7 @@ class Comment {
 
     $user = null;
     if (isset($_COOKIE['kero_token'])) $user = DB::table('users')->select('id')->where('kero_token', $_COOKIE['kero_token'])->first()->id;
-    if ($user == 0 && (str_contains($r->newmessage, 'http://') || str_contains($r->newmessage, 'https://'))) return redirect('/');
+    if ($user == 0 && (strpos($r->newmessage, 'http://') !== false || strpos($r->newmessage, 'https://') !== false)) return redirect('/');
 
     $add = DB::table('blg_comments')->insertGetId([
       'user_id' => $user,