function _is_logged_in()
{
    /*****DEBUG****/
    //	error_log("in _is_logged_in instance prefix = ".HEURIST_SESSION_DB_PREFIX);
    /*****DEBUG****/
    //	error_log("in _is_logged_in restrict = ".defined('HEURIST_RESTRICT_GROUP_ID'));
    return !!@$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_name'] && (!defined('HEURIST_RESTRICT_GROUP_ID') || (@$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_access'][HEURIST_RESTRICT_GROUP_ID] || @$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_access'][HEURIST_SYS_GROUP_ID])) && is_cookie_current_version();
}
function _is_logged_in()
{
    return !!@$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_name'] && (!defined('HEURIST_RESTRICT_GROUP_ID') || (@$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_access'][HEURIST_RESTRICT_GROUP_ID] || @$_SESSION[HEURIST_SESSION_DB_PREFIX . 'heurist']['user_access'][HEURIST_SYS_GROUP_ID])) && is_cookie_current_version();
}