Sorting elements of an LDAP array

Hello, I'm writing some scripts to manage unix accounts via OpenLDAP and I've encountered a small roadblock. I can get a listing through an ldap_list of all users with relevant uidNumber and then use ldap_get_entries to get info about those users. I then use a for loop to get the two relevant fields I want ... $params = array("uidNumber", "gidNumber"); $output = ldap_list($conn, $base_dn, "uidNumber=*", $params); $info = ldap_get_entries($conn, $output); for ($i=0; $i<$info["count"]; $i++) { $useduids = $info[$i]["uidnumber"][0]); $usedgids = $info[$i]["gidnumber"][0]; } My aim is to take all of the userid's and groupid's and sort them in ascending order and then get the values of the highest number, increment it by one, and use that as the next available uid and gid for creating new entries in an LDAP database. I figured I could take the values in useduids and usedgids and run them through asort() followed by end() and then increment that value by one. So far, it hasn't worked. Can anyone give me any pointers on how to accomplish this? -- Brian