I'm a newbie, so I hope this helps some other newbie with a head scratcher...
This code returned an error of 'No Such Object':
<?php
$search = ldap_search ($ldapcon, "cn=admin,dc=acpower,dc=biz", "(filters)");
?>
I took out the cn, and magic! it works:
<?php
$search = ldap_search ($ldapcon, "dc=acpower,dc=biz", "(filters)");
?>