My LDAP Search Implementing Pagination

ldap_search.php

<?php 
define("LDAP_HOST","mycompany.co.id");
define("LDAP_PORT", "389");
define("BASE_DN", "dc=mycompany,dc=co,dc=id");

define("PAGE_SIZE", 100); // limit

define("LDAP_USER", "username@mycompany.co.id");
define("LDAP_PASSWORD", 'secret');

define("BR", "\n");
define("VL", " | ");

$arrUnlisted = array(
	'OU=Computer Users',
	'OU=Distribution',
	'CN=Computers',
	'CN=Policies',
	'CN=System',
	'CN=Operations',
	'CN=DomainUpdates',
	'CN=Topology',
	'DFSR-LocalSettings',
	'OU=Temporary account'
);

$ldap_connection = ldap_connect(LDAP_HOST, LDAP_PORT);

ldap_set_option($ldap_connection, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldap_connection, LDAP_OPT_REFERRALS, 0);

$bind = ldap_bind($ldap_connection, LDAP_USER, LDAP_PASSWORD);

$filter = "(cn=*)";

$cookie = '';

$pageCounter = 1;
$counter = 1;
do {
    ldap_control_paged_result($ldap_connection, PAGE_SIZE, true, $cookie);
    $searchResult = ldap_search($ldap_connection, BASE_DN, $filter);
    $entries = ldap_get_entries($ldap_connection, $searchResult);

    foreach($entries as $entry) {
        if (isset($entry['mail'])) {
        	$cn = $entry['cn'];
        	$name = $cn[0];
        	$mail = $entry['mail'][0];
        	$dn = $entry['dn'];
        	if (strpos($dn, ',') !== false) {
	        	$arrDN = explode(",", $dn);
	        	$ou = $arrDN[1];
	        	if (!in_array($ou, $arrUnlisted)) {
	        		echo $counter . VL . $name . VL . $dn . VL . $mail . BR;
	        		$counter++;
	        	}
			}
        }
    }

    $pageCounter++;

    ldap_control_paged_result_response($ldap_connection, $searchResult, $cookie);

} while($cookie !== null && $cookie != '');

ldap_close($ldap_connection);