# Getting information from the LDAP server

## RootDSE

See the following documents for more information on the attributes contained within the RootDSE for a given LDAP server.

- OpenLDAP

- Microsoft ActiveDirectory

- Novell eDirectory

### Getting hands on the RootDSE

    $options = array(/* ... */);
    $ldap = new Zend_Ldap($options);
    $rootdse = $ldap->getRootDse();
    $serverType = $rootdse->getServerType();

## Schema Browsing

### Getting hands on the server schema

    $options = array(/* ... */);
    $ldap = new Zend_Ldap($options);
    $schema = $ldap->getSchema();
    $classes = $schema->getObjectClasses();

### OpenLDAP

### ActiveDirectory

#### 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.