Header CSRD

<?php
include ('includes/db.php');
include('includes/nocsrf.php');
//Include Function page
include ('includes/Functions.php');
if(isSet($_GET['lang']))
{
$lang = $_GET['lang'];

// register the session and set the cookie
$_SESSION['lang'] = $lang;

setcookie('lang', $lang, time() + (3600 * 24 * 30));
}
else if(isSet($_SESSION['lang']))
{
$lang = $_SESSION['lang'];
}
else if(isSet($_COOKIE['lang']))
{
$lang = $_COOKIE['lang'];
}
else
{
$lang = 'en';
}

switch ($lang) {
  case 'en':
  $lang_file = 'lang_en.php';
  break;

  case 'de':
  $lang_file = 'lang_sk.php';
  break;

  case 'es':
  $lang_file = 'lang_sk.php';
  break;

  default:
  $lang_file = 'lang_sk.php';

}

include_once 'language/'.$lang_file;
//Page Detection
$myPage = $_SERVER['PHP_SELF'];


if ($myPage='login.php'){
echo '