- $userlist['susers'] = $DB->get_records_select_menu('user', "id IN ($in)", null, 'fullname', 'id,'.$DB->sql_fullname().' AS fullname');
+ list($in, $inparams) = $DB->get_in_or_equal($bulkusers);
+ $userlist['susers'] = $DB->get_records_select_menu('user', "id $in", $inparams, 'fullname', 'id,'.$DB->sql_fullname().' AS fullname');