<?

$user = '<AD_User>';    // get from post
$ldappass = '<AD_Password>';  // associated password

// using ldap bind
$ldaprdn  = $user . '@<domain>.local';     // ldap rdn or dn
$ldap_server = 'ldap://<domaindc>'; //domain controller

// connect to ldap server
$ldapconn = ldap_connect($ldap_server, 389)
    or die("Could not connect to LDAP server.");

if ($ldapconn) {

    // binding to ldap server
    $ldapbind = ldap_bind($ldapconn, $ldaprdn, $ldappass);

    // verify binding
    if ($ldapbind) {
        echo "LDAP bind successful...";


    } else {
        echo "LDAP bind failed...";
    }
}

else{
    echo "LDAP Connection to " . $ldap_server . "failed";
}

?>