PHPFusion\Authenticate::logOut PHP Method

    public static function logOut()
    {
        $result = dbquery("DELETE FROM " . DB_ONLINE . " WHERE online_ip='" . USER_IP . "'");
        //header("P3P: CP='NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM'");
        Authenticate::_setCookie(COOKIE_USER, "", time() - 1209600, COOKIE_PATH, COOKIE_DOMAIN, FALSE, TRUE);
        Authenticate::_setCookie(COOKIE_LASTVISIT, "", time() - 1209600, COOKIE_PATH, COOKIE_DOMAIN, FALSE, TRUE);
        session_destroy();
        return Authenticate::getEmptyUserData();
    }

    $current_page .= "/" . $script_url[$current];
    $base_url_count--;
}
// Set TRUE_PHP_SELF and START_PAGE
define("TRUE_PHP_SELF", $current_page);
define("START_PAGE", substr(preg_replace("#(&|\\?)(s_action=edit&shout_id=)([0-9]+)#s", "", TRUE_PHP_SELF . (FUSION_QUERY ? "?" . FUSION_QUERY : "")), 1));
/**
 * Login / Logout / Revalidate
 */
if (isset($_POST['login']) && isset($_POST['user_name']) && isset($_POST['user_pass'])) {
    $auth = new Authenticate($_POST['user_name'], $_POST['user_pass'], isset($_POST['remember_me']) ? TRUE : FALSE);
    $userdata = $auth->getUserData();
    unset($auth, $_POST['user_name'], $_POST['user_pass']);
    redirect(FUSION_REQUEST);
} elseif (isset($_GET['logout']) && $_GET['logout'] == "yes") {
    $userdata = Authenticate::logOut();
    redirect(BASEDIR . "index.php");
} else {
    $userdata = Authenticate::validateAuthUser();
    // ok userdata never add _1.
}
// User level, Admin Rights & User Group definitions
define("iGUEST", $userdata['user_level'] == 0 ? 1 : 0);
define("iMEMBER", $userdata['user_level'] <= -101 ? 1 : 0);
define("iADMIN", $userdata['user_level'] <= -102 ? 1 : 0);
define("iSUPERADMIN", $userdata['user_level'] == -103 ? 1 : 0);
define("iUSER", $userdata['user_level']);
define("iUSER_RIGHTS", $userdata['user_rights']);
define("iUSER_GROUPS", substr($userdata['user_groups'], 1));
// Get enabled language settings
$language_opts = fusion_get_enabled_languages();