Example 514. Getting hands on the server schema
$options = array(/* ... */);
$ldap = new Zend_Ldap($options);
$schema = $ldap->getSchema();
$classes = $schema->getObjectClasses();
Schema browsing on ActiveDirectory servers
Due to restrictions on Microsoft ActiveDirectory servers regarding the number of entries returned by generic search routines and due to the structure of the ActiveDirectory schema repository, schema browsing is currently not available for Microsoft ActiveDirectory servers.