header.php

<?php
/**
 * ****************************************************************************
 * userpage - MODULE FOR XOOPS
 * Copyright (c) Hervé Thouzard of Instant Zero (http://www.instant-zero.com)
 *
 * You may not change or alter any portion of this comment or credits
 * of supporting developers from this source code or any supporting source code
 * which is considered copyrighted (c) material of the original comment or credit authors.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @copyright       Hervé Thouzard of Instant Zero (http://www.instant-zero.com)
 * @license         http://www.fsf.org/copyleft/gpl.html GNU public license
 * @package         userpage
 * @author          Hervé Thouzard of Instant Zero (http://www.instant-zero.com)
 *
 * ****************************************************************************
 */
if (file_exists(__DIR__ . '/../../mainfile.php')) {
    require  dirname(dirname(__DIR__)) . '/mainfile.php';
} elseif (file_exists(__DIR__ . '/../../../mainfile.php')) {
    require  dirname(dirname(dirname(__DIR__))) . '/mainfile.php';
}
require_once XOOPS_ROOT_PATH . '/modules/userpage/include/common.php';