<?
$sayfa=$_GET["s"];
$dil = $_GET['lang'];

if(!isset($_GET['s']) || empty($_GET['s']) || $_GET['s'] == '') 
    $s = '1'; 
else 
    $s = $_GET['s']; 
     
if(!isset($_GET['lang']) || empty($_GET['lang']) || $_GET['lang'] == '') 
    $dil = 'tr'; 
else 
    $dil = $_GET['lang']; 

?>

<?php

    $sayfa=$_GET["s"];
    switch($sayfa){	
        case "1";
            include("$dil/1.php");
        break;
        case "2";
            include("$dil/2.php");
        break;
    }
	
?>