Example of a WHMCS hook code using WHMCS's new "The Connection Manager"

whmcs.php

<?php
use Illuminate\Database\Capsule\Manager as Capsule;

function create_ldap_account($vars) {
    $userid = $vars['userid'];
    $criteria = array('fieldid' => '2', 'relid' => $userid);
    $result = Capsule::table('tblcustomfieldsvalues')->where($criteria)->first();

    $username = $result->value;
}

add_hook("ClientAdd",1,"create_ldap_account");

?>