CodeIgniter and PhPBB 3.1.3 integration

Question

I develop a website site based on CodeIgniter, the latest version 2.2.1 and I installed a PhPBB forum (version 3.1.3).

I would like to use the functions of the forum on my web site (like the connection/profile etc.). I've looked on this site : http://www.3cc.org/blog/2010/03/integrating-your-existing-site-into-phpbb3/ to simply display my pseudo.

My Controller is just a copy/paste of the first paragraph

class Forum_test extends CI_Controller{

    function __construct()
    {
        parent::__construct();
    }

    function index()
    {
         define('IN_PHPBB', true);
         $phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : 'forum/';
         $phpEx = substr(strrchr(__FILE__, '.'), 1);
         include($phpbb_root_path . 'common.' . $phpEx);
         // Start session management
         $user->session_begin();
         $auth->acl($user->data);
         $user->setup();
    }
}

And my problem is when I try to use this code, I have the following error

Fatal error: Call to a member function header() on a non-object in /var/www/forum/phpbb/session.php on line 224

But if I create a simple document with only

<?php
define('IN_PHPBB', true);

$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : 'forum/';
$phpEx = substr(strrchr(__FILE__, '.'), 1);
include($phpbb_root_path . 'common.' . $phpEx);

// Start session management

$user->session_begin();
$auth->acl($user->data);
$user->setup();
?>

It works (I don't have any error)

Do you have any idea of what is wrong with my code ?

Thank you.

Answer 1

So ... I found the solution after long research ...

https://www.phpbb.com/community/viewtopic.php?f=71&t=2287546

The solution was to add global variables to the function index

global $request;
global $phpbb_container;
global $phpbb_root_path, $phpEx, $user, $auth, $cache, $db, $config, $template, $table_prefix;
global $request;
global $phpbb_dispatcher;
global $symfony_request;
global $phpbb_filesystem;