View file inc/lang.php

<?php
if($user){
	$lang = mysql_fetch_assoc(mysql_query("SELECT `language` FROM `users` WHERE `id` = '" . $userid . "';"));
	if($_SERVER['PHP_SELF']!="/index.php"){
	$arr = glob('../inc/lang/' . $lang['language'] . '/*.lng');
	}else{
	$arr = glob('inc/lang/' . $lang['language'] . '/*.lng');
	}
	foreach($arr as $name){
		require('' . $name . '');
	}
} else {
	$language = isset($_SESSION['lang']) ? $_SESSION['lang'] : 'en';
	$arr = glob('inc/lang/' . $language . '/*.lng');
	foreach($arr as $name){
		require('' . $name . '');
	}
}