function logged_in_redirect()
{
    if (logged_in() === true) {
        $session_user_id = $_SESSION['user_id'];
        $user_data = user_data($session_user_id, 'user_id', 'username', 'password');
        if (admin_access($user_data['username']) === false) {
            header('Location: index.php');
            exit;
        }
    }
}
<?php

admin_access();
$is_elements = true;
//d($modulsdsdes );
include 'list.php';
?>