php LANG _SERVER HTTP_HOST en giduv com en ru require_once lib config

<?php

 /**
  *
  *
  *
  **/

  $LANG = $_SERVER['HTTP_HOST'] == 'en.giduv.com' ? 'en' : 'ru';

  require_once 'lib/config.php';
  require_once 'dbconfig.php';
  if (!defined('ZCM_NOSQL')) require_once 'dbconfig.php';
  if (!defined('ZCM_NOSMARTY')) require_once 'smarty.php';  
  require_once 'Model/News.php';
  require_once 'Model/Blocks.php';

  // Новости
  $total = 0;
  $HeaderNews = Model_News::getHeaders(array('start'=>0,'perpage'=>5,),$total);
  if ($HeaderNews) $smarty->assign('HeaderNews',$HeaderNews);
  $smarty->assign('IE',strpos($_SERVER['HTTP_USER_AGENT'],'MSIE') != false); 

  // Меню
  $_mtime = $db->selectCell('Select MAX(arLastMod) FROM ?_article');
  if (!is_file($f = "data/cache/menu.html") || filemtime($f) < $_mtime || 1)
  {
   // Делаем меню
   require_once 'fn_sitemap.php';
  } else $menu = file_get_contents($f);
  $smarty->assign('Menu',$menu);

  // Контакты
  $smarty->assign('Contacts',$db->selectRow('Select blName AS name,blText as text FROM ?_block WHERE blIntName=?','kontaktyi_na_glavnoyi'));

?>