PHP script that add's an email to an LDAP user

setMail.php

<?php
  $dn = 'uid=zombie27755,ou=zombies,dc=owncloud,dc=bzoc';
  $adn = 'uid=owncloudagent,ou=Users,dc=owncloud,dc=bzoc';
  $apwd = '*******';
  $mail = '[email protected]';
  $host = 'ldap.owncloud.bzoc';
  $port = 389;

  $kv = array('mail' => $mail);

  $cr = ldap_connect($host, $port);
  ldap_set_option($cr, LDAP_OPT_PROTOCOL_VERSION, 3);
  ldap_bind($cr, $adn, $apwd);
  ldap_mod_add($cr, $dn, $kv);