Language detection and switching

[Rhialto]

Hello,

 

I will tell you whant I want to do first and what I've done so far and hopefuly someone will be able to help.

 

What I hope for is to have one unique index.php that will work everywhere.  I don't mind if I have to modify each and add path where it is located since this won't happen often.

 

It needs to take car of preferred language and if someone land in a directory, I want it to load the index.php there.

 

I also look to not expose hidden URL in the browser URL box.  See *note 1 below.

 

My directory structure is as follow:

 

/index.php

/about/index.php

/blahblah/index.php

 

The current index.php I'm trying to build looks like this:

 

<?php
    if (preg_match('/^www.(.+)$/i', $_SERVER['HTTP_HOST'], $matches)) {
      header("Status: 301 Move permanently", false, 301);
      header('Location: http://'.$matches[1].$_SERVER['REQUEST_URI']);
      exit;
    }

    session_start();
    $Lang = $_SESSION['lang'];
    
    if (!isset($Lang))
         {
        if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
            {
            $Lang = explode(",",$_SERVER['HTTP_ACCEPT_LANGUAGE']);
            $Lang = strtolower(substr(chop($Lang[0]),0,2));
            if ($Lang !== 'fr' && $Lang !== 'en')
                { 
                $Lang = "en";
                }
            }
        else
            {
      $Lang = "en";
            }
        $_SESSION['lang'] = $Lang;
        }

    include $_SERVER["DOCUMENT_ROOT"] . ("/index_" . $_SESSION['lang'] . ".php");
?>

 

First I remove "www." in the address when applies.  Not a must but I like that.

 

Then I check if Language is already set, if not I detect and set it for next pages.

 

I finally load the proper page according to language with an "include" so index_en.php remain secret (sort of).

 

*note 1: all my index_xx.php pages in every directory have this:

<script language="javascript" type="text/javascript">
        if (self == top) 
        top.location.href="directory/index.php";
    </script>

 

 

When in the root, it seems to work and I get the proper page but if I place this in /about/ then when I tried to load /about/index.php it doesn't work.  I think the include on the last line could be the problem.

 

I'm either close or far from it, I don't know.

 

Thank you.

[Rhialto]

I came too late, cannot edit.  :-\

 

Well I think I found out what's happening.

 

The fact that the index.php have an include instead of loading index_xx.php, it triggers the javascript I added (look 1st post) to prevent visitor to view index_xx.php pages.

 

Any suggestion?