如何使用 LDAP 查询对 LDAP 结果进行排序？

Question

I'm creating a LDAP directory search using PHP and we're using Novell as our LDAP server. I'm able to successfully search and return results; this is the current filter I'm running, (&(FERPA=N)(|(uid=*searchphrase*)(sn=*searchphrase*)(fullName=*searchphrase*)(telephoneNumber=*searchphrase*))) .

I want to be able to sort by last name, or the LDAP variable sn . I could sort it via PHP, but I want that to be the last resort. Is there a way to sort the results based on a column. For example, in SQL you can sort based on a column like this, SELECT * FROM TABLE WHERE COL='criteria' ORDER BY COL; Is there something similar that can be done with LDAP Queries?

Answer 1

LDAP client applications that require results of search requests to be ordered in a repeatable way should use the server-side sort extension . In most cases, use of the server-side sort extension requires the application coder to inform the directory administrators so that proper indexing can be setup.

Answer 2

As far as I know there is no way to sort results with a LDAP filter. All a filter does is limit what entries are returned.

With php, you would run your search, then sort the result with http://us3.php.net/manual/en/function.ldap-sort.php

Alternatively, you could read all the entries into an array and then run one of php's other sorting functions on them. http://us1.php.net/manual/en/array.sorting.php