Samba4 & PHPLDAPAdmin

Samba4 includes a PHP LDAP admin configuration sample. Unfortunately it doesn't match up to the current version of PHP LDAP Admin. The configuration you want to put into config/config.php is:

$servers->newServer('ldap_pla');
$servers->setValue('server','name','Samba4 AD Server');
$servers->setValue('server','host','ldapi://%2Fopt%2Fad%2Fsamba4%2Fprivate%2Fldapi');
$servers->setValue('login','auth_type','session');
$servers->setValue('login','attr','dn');

Then you should get an PHP LDAP Admin login screen for your shiny Samba4 AD DSA. For the AD uninitiated the DN of the Administrator's account is "CN=Administrator,CN=Users,DC=ad,DC=mormail,DC=com" (for example, if you AD domain is "ad.mormail.com").  Using that DN and the domain administrator's password you should be able to login.
Another trick is to put that LDAPI LDAP URI into the /etc/openldap/ldap.conf  file so you can use the OpenLDAP LDAP CLI utilities [ldapsearch, ldapadd, ldapmodify, etc...] provided by your distribution.