// Activate WordPress Maintenance Mode
function wp_maintenance_mode(){
if(!current_user_can('edit_themes') || !is_user_logged_in()){
wp_die('
Website under Maintenance
We are performing scheduled maintenance. We will be back on-line shortly!');
}
}
add_action('get_header', 'wp_maintenance_mode');Такой страницы не существует. Попробуйте поискать здесь