<?php 
//Get all users:
$this->LdapUser->findAll('uid', '*');

//Get users from a specific group inside the 'People' group:
$this->LdapUser->findAll('uid', '*', 'ou=Client Company,ou=People,cn=example,cn=com');

//Get a specific user:
$this->LdapUser->findAll('uid', 'jsmith');
?>