How to get right ldap resources with Zend Ldap? - php

Question

I started using this module from Zend (https://framework.zend.com/manual/2.3/en/modules/zend.ldap.introduction.html) for work with LDAP, and I want to implement it into my classes which works with LDAP. But when I want to use some php ldap function which are not implemented in Zend-Ldap I have to get the resource identifier but I always get resource(37) of type (Unknown) or error dap_mod_del(): 41 is not a valid ldap link resource (2). I think I use Zend module correctly you can see below.
Other zend-ldap features work perfect. But I cant get the right resources.
index.php
require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/api/AtaLdap.php';
require_once __DIR__ . '/api/classes/Users.php';
$ldap = new AtaLdap\AtaLdap();
var_dump($ldap->Zend());
AtaLdap.php
namespace AtaLdap;
use Zend;
class AtaLdap
{
const ldapServer = *********;
const ldapPort = **********;
const ldapLogin = *********;
const ldapPass = *********;
const ldapBaseDn = ********;
/**
* Connect to LDAP via Zend LDAP module
*
* #return Zend\Ldap\Ldap
* #throws Zend\Ldap\Exception\LdapException
*/
public static function Zend()
{
$ldapOptions = [
'host' => self::ldapServer,
'port' => self::ldapPort,
'password' => self::ldapPass,
'bindRequiresDn' => TRUE,
'baseDn' => self::ldapBaseDn,
'username' => self::ldapLogin
];
$ldap = new Zend\Ldap\Ldap($ldapOptions);
$ldap->bind();
return $ldap->getResource();
}
public static function ZendRes()
{
return self::Zend()->getResource();
}
public static function deleteEntry($fromDN, $nameEntry, $contentEntry)
{
$res = self::Zend()->getResource();
$entryToDelete["$nameEntry"] = $contentEntry;
$deleteEntry = ldap_mod_del($res, $fromDN, $entryToDelete);
return $deleteEntry ? TRUE : FALSE;
}