Multiple base DN's and ou search DN's are not supported

I need help plz in implementing multiple DN's for OU search,
my code so far:

    // Check to see if we're supposed to be displaying OrganizationalUnits
  if ($edit2['ou_on'] != 0) {

    // Multiple OU DN foreach() loop
  foreach (explode("\r\n", $edit2['ou_dn']) as $oudn) {
	
    // Prepare LDAP Connetion
    $ldap_directory->setOption('server', $edit['server']);
    $ldap_directory->setOption('port', $edit['port']);
    $ldap_directory->setOption('attr_filter', $edit2['ou_filter']);
	
	
    // If there is no BINDDN and BINDPW -- the connect will be an anonymous connect
    $ldap_directoryconnect = $ldap_directory->connect($edit['binddn'], $edit['bindpw']);
	$entries = $ldap_directory->search($oudn, $edit2['ou_filter'], array($edit2['ou_attribute']));
    //$entries = $ldap_directory->search($edit2['ou_dn'], $edit2['ou_filter'], array($edit2['ou_attribute']));
	
    $options=array('');
    $eoptions=array('');
    $count = 0;
    while ($count < $entries['count']) {
      $eoptions[$count] = $entries[$count][$edit2['ou_attribute']][0];
      $count++;
    }
    $options = array_unique($eoptions);
    natcasesort($options);
    $options = array_reverse($options);
    $options[$count] = "Alle Abteilungen";
    $options = array_reverse($options);
    if ($edit2['ou_label'] != '') {
      $ou_label = $edit2['ou_label'];
    }
    else {
      $ou_label = t('Organizational Unit');
    }
} //foreach

    $form[$edit2['did']]['organizationalUnits'] = array(
      '#type' => 'select',
      '#title' => $ou_label,
      '#attributes' => array('style' => 'width: 160px;'),
      '#options' => $options,
      '#description' => t('Select an office.'),
    );
} 

I have defined the following OU search DN's:

ou=User,ou=test1,dc=mydomain,dc=local
ou=User,ou=test2,dc=mydomain,dc=local
ou=User,ou=test3,dc=mydomain,dc=local

At the moment it processes all of each OU DNs in the LDAP query,
but only displays the last one (test3) in the DropDown menu..

thanks