<?php
/**
 * @author Marijn van der Kruijt
 */


$username = $_POST['username']; 
$password = $_POST['password']; 

$domeinserver = "domainserver"; 
$domein = "domain"; 
$usergroep = "CN=USERGROUP,OU=EU,DC=domain,DC=com"; 

$ds=ldap_connect($domeinserver);  
ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, 3); 
ldap_set_option($ds, LDAP_OPT_REFERRALS, 0); 

$r = @ldap_bind($ds, $domein."\\".$username, $password); 

if ($r) { 
$sr= ldap_search($ds, $usergroep, "CN=*"); 
$info = ldap_get_entries($ds, $sr); 

    for ($i=0; $i<$info["count"]; $i++) { 
        for ($b=0; $b<count($info[0]["member"])-1; $b++) { 
            $zoek = $info[0]["member"][$b]; 
            $nr=ldap_search($ds, $zoek, "CN=*"); 
            $ninfo = ldap_get_entries($ds, $nr); 
            $userstring = $ninfo[0][userprincipalname][0]; 
            list($loginnaam, $achterstuk) = split('[@]', $userstring); 
			$ingroep = ((strtolower($username) == strtolower($loginnaam)) ? 1 : 0); 
			switch($ingroep){ 
				case 0: echo "Geen lid"; break; 
				case 1: echo "Wel lid"; break; 
			} 
       } 
    } 
} else { echo "Uw gebruikesnaam of wachtwoord is incorrect..." ; }

ldap_close($ds);

?>