'searchUsers' executes slowly with ldapquery

'searchUsers' executes slowly with ldapquery: there a lot of groups、members in my AD, when i debug code ,i find displayNamesInGroup execution takes too long，should we change this function, do not get all displayname then filter. i suggest change this , 1.get groupdn by gid 2.get users by filter with -searchBase or groupdn `/ * get a list of all display names in a group * * @param string $gid * @param string $search * @param int $limit * @param int $offset * @return array an array of display names (value) and user ids (key) */ public function displayNamesInGroup($gid, $search =...