Re: LDAP sorting

On Wed, Nov 28, 2001 at 03:08:52PM +0930, Adam.Whitehead@compsm.com.au wrote: > Hi All- > > Can anyone tell me if PHP's LDAP functions support "server side sorting of > search results" as defined in this RFC: > > http://www.ietf.org/rfc/rfc2891.txt Not currently, maybe it will... Depends on how many wants it. > Sorting results from LDAP searches in PHP is a pain because of the > structure > of the result array. Yes, but I think that's a poor excuse for doing it on the server side. I think this should be done by the client in most cases. One might also need to take the clients locale into account when sorting the data. > Alternatively if anyone has a nice function for sorting the array returned > by > ldap_get_entries() by any desired attribute, that would be a great help > also. It's not that hard. What I do, is that I create a new simple array with just the attribute values I want to sort on and preserve the indices of the result array. Next I sort that array (again preserving indices). The indices of the sorted array now give me the order I should use when displaying the entries from the result array. Not that hard, it looks something like this: $n=ldap_count_entries($ds,$sr); $info = ldap_get_entries($ds, $sr); ldap_free_result($sr); for ($i=0; $i<$n; $i++) { $cn[$i]=$info[$i]["cn"][0]); } asort($cn); reset($cn); for ($j=0; list($i,) = each($cn);) { $sorted[$j] = $info[$i]; } Anyway, the next PHP release (in CVS or snapshots now) will have a function ldap_sort() for client side sorting. After you've done the search, simply do ldap_sort($ds, $sr, "cn"); and you have sorted the results on cn, and you access the result as usual afterwards. Stig