WB 2.08.x

        $sql = "SELECT * FROM ".TABLE_PREFIX."pages WHERE page_id = '".REFERRER_ID."'";

        // get this once for performance. We really should be calling only need to

        // call $wb->get_group_id() but that outputs a warning notice if the 

        // groupid isn't set in the session, so we check it first here.

        $currGroup = array_key_exists('GROUP_ID', $_SESSION) ? 

            ','.$wb->get_group_id().',' : 'NOGROUP';

        // we request all matching rows from the database for the menu that we 

        // are about to create it is cheaper for us to get everything we need 

                else {  // WB < 2.7

                    // We can't do this in SQL as the viewing_groups column contains multiple 

                    // values which are hard to process correctly in SQL. Essentially we add the

                    // following limit to the SQL query above:

                    //  (visibility <> "private" OR $wb->get_group_id() IN viewing_groups)

                    if ($page['visibility'] == 'private' 

                        && false === strstr(",{$page['viewing_groups']},", $currGroup)) 

                    {

                        continue;

                    }

                }