Showing information based on group

Full credit goes to RMcGirr83 for this code

#
#-----[ OPEN ]------------------------------------------
#
includes/functions.php
#
#-----[ FIND ]------------------------------------------
#

        // application/xhtml+xml not used because of IE
        header('Content-type: text/html; charset=UTF-8'); 

#
#-----[ BEFORE, ADD ]------------------------------------------
#

         // Check what group a user is in
        if ( !function_exists('group_memberships') )
        {
            include_once($phpbb_root_path . 'includes/functions_user.'.$phpEx);
        }

        $groups = group_memberships(false,$user->data['user_id']);
        foreach ($groups as $grouprec)
        {
            $template->assign_vars(array(
                'S_GROUP_' . $grouprec['group_id'] => true
            ));
        } 

Now on any page, you should be able to use this switch

    <!-- IF S_GROUP_X -->

Just replace X with ID of the group. You can also expand on that and add multiple groups and/or any other template function that is built into phpBB

If user is in either of the groups

    <!-- IF S_GROUP_1 or S_GROUP_2 -->

User has to be in both groups to return true

    <!-- IF S_GROUP_1 and S_GROUP_2 -->

Show for all except that group

     <!-- IF not S_GROUP_X -->