/**
  * Create/Update ldap group as tl_member_group
  * @param serialized array $varValue
  * @return serialized array $varValue
  */
 public static function updateMemberGroups($varValue)
 {
     $arrSelectedLdapMemberGroups = deserialize($varValue, true);
     if (!empty($arrSelectedLdapMemberGroups)) {
         $arrLdapMemberGroups = LdapMemberGroupModel::getLdapMemberGroups();
         if (!is_array($arrLdapMemberGroups) || empty($arrLdapMemberGroups)) {
             return $varValue;
         }
         // ldap groups
         foreach ($arrLdapMemberGroups as $k => $v) {
             // selected ldap groups in settings
             foreach ($arrSelectedLdapMemberGroups as $gid) {
                 if (isset($v['gidnumber']) && $v['gidnumber'][0] == $gid) {
                     $objMemberGroup = \MemberGroupModel::findBy('ldapGid', $gid);
                     if ($objMemberGroup === null) {
                         $objMemberGroup = new \MemberGroupModel();
                         $objMemberGroup->ldapGid = $gid;
                     }
                     $objMemberGroup->tstamp = time();
                     // name
                     if (isset($v['cn'])) {
                         $objMemberGroup->name = $v['cn'][0];
                     } else {
                         $objMemberGroup->name = $gid;
                     }
                     $objMemberGroup->save();
                 }
             }
         }
         LdapMember::updateMembers($arrSelectedLdapMemberGroups);
     }
     return $varValue;
 }