<?php 
function findAll($attribute = 'uid', $value = '*', $baseDn = 'ou=People,dc=example,dc=com')
{
    $r = ldap_search($this->ds, $baseDn, $attribute . '=' . $value);

    if ($r)
    {
        //if the result contains entries with surnames,
        //sort by surname:
        ldap_sort($this->ds, $r, "sn");

        return ldap_get_entries($this->ds, $r);
    }
}
?>