LDAP - Cannot search lower than top level

[Guern]

Hi,

I'm currently trying to seach windows 2003 active directory for user information. Even with the query

dc=mydomain,dc=com and cn=*

I only ever get the top level searched, i.e. only about 10 answers, all system accounts. There should be 1000's and if I use ldapsearch from the command prompt with the same query they are all returned.

My code is very simply using

$ds=ldap_connect("localhost");
ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3);
$r=ldap_bind($ds);
$sr=ldap_search($ds,"dc=mydomain,dc=com", "cn=*");
$ldapResults = ldap_get_entries($ds, $sr);

for ($item = 0; $item < $ldapResults['count']; $item++)
{
Then loop through the results.

Any ideas how to get this to search the entire directory and not just the top level?

Thanks.