<?php
/**
 * friendlyUrl.php
 * Created by Komma Mediadesign.
 * Author: mike
 * Date: 3/19/13
 */


/**
 * Following code is used to build user-friendly URLs.
 * 1. Set if we have a language in the url.
 */
$addLanguage = false;

/**
 * 2. Get the REQUEST_URI and explode this on '/'
 */
$stringUrl = substr($_SERVER['REQUEST_URI'],1);
$urls = explode('/', $stringUrl);

/**
 * 3. If we have a language, the structure will be root.com/lang/page/sub/sub2/sub3
 * Check if the lang is valid, else header 404.
 * If no language is set, header to "nl".
 */
$urlCount = 0;
if($addLanguage)
{
    $languages = array('nl','en');
    $default = $languages[0];

    if(isset($urls[$urlCount]) && ! empty($urls[$urlCount]))
    {
        $lang = trim(urldecode($urls[$urlCount]));
        if(in_array($lang,$languages))
        {
            define('URL_LANG', $lang);
        }
        else{
           header("HTTP/1.0 404 Not Found");
           header('location: /'.$default.'/404');
           exit;
        }
    }
    else{
        // redirect to default page
        header ('HTTP/1.1 301 Moved Permanently');
        header('Location: /'.$default.'/');
        exit;
    }
    $urlCount++;
}

/**
 * 4. The second - or first if ! $addLanguage - GET-variable is $page
 */
if(isset($urls[$urlCount]) && ! empty($urls[$urlCount]))
{
    $page = trim(urldecode($urls[$urlCount]));
    if(!empty($page))
    {
        define('URL_PAGE', $page);
        $urlCount++;
    }
}

/**
 * 5. All the other get variables are called sub, sub2, sub3 etc.
 */
if(count($urls) > $urlCount)
{
    for($i=$urlCount;$i<=count($urls);$i++)
    {

        if(isset($urls[$i]))
        {
            $value = trim(urldecode($urls[$i]));
            $name = 'URL_SUB';
            if($i > $urlCount) $name.= $i;
            if($value != '')
            {
                define($name,$value);
            }
        }
    }
}