Codeigniter userdata removed right after creation - php

Question

I am working on a login script and it used to work perfectly but then all of a sudden it stopped working. I commented out a lot of code but it still does the same. When I login it sees the userdata but it disappears right after.
This is what I got in my controller: (I leave commented code out)
Login controller:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Login extends MY_Controller {
public function __construct(){
parent::__construct();
$this->smarty->assign('header',"../../../views/login_header.tpl");
$this->smarty->assign('footer',"../../../views/login_footer.tpl");
$this->load->library('form_validation');
}
public function index()
{
$this->load->model('mdl_login');
$email = $this->input->post('email');
$password = $this->input->post('password');
$this->form_validation->set_rules('email', 'Email', 'required|valid_email');
$this->form_validation->set_rules('password', 'Password', 'required|callback_credential_check');
if ($this->form_validation->run() == FALSE)
{
$errors = validation_errors();
$this->smarty->assign('errors', $errors);
}
elseif($this->mdl_login->login($email, $password) == FALSE){
$errors = 'Your login information is incorrect.';
$this->smarty->assign('errors', $errors);
}
else //Validation success
{
//Get user
$user = $this->mdl_login->user($email);
$user['logged_in'] = TRUE;
//It's not the if statement here because I also tried without it
if($this->session->userdata('logged_in') == FALSE){
$this->session->set_userdata($user);
}
print_r($this->session->all_userdata());
die(); //At this point the userdata is correct but on refresh or going to another page it isn't
//Redirect to homepage
//redirect('dashboard', 'refresh');
}
$this->smarty->view('login/login.tpl');
}
}
Login Model:
<?php
class Mdl_login extends CI_Model {
public function login($email, $password){
return TRUE;
}
public function user($email){
$query = $this->db->get_where('korisnici_tbl', array('email' => $email));
return $query->row_array();
}
}
?>
My_Controller:
<?php (defined('BASEPATH')) OR exit('No direct script access allowed');
/* load the MX_Controller class */
require APPPATH."third_party/MX/Controller.php";
class MY_Controller extends MX_Controller {
public function __construct(){
print_r($this->session->all_userdata());
$this->smarty->assign('header',"../../../views/header.tpl");
$this->smarty->assign('footer',"../../../views/footer.tpl");
$this->smarty->assign('form_url_plugin',"../../../views/form_url_plugin.tpl");
$this->smarty->assign('controller',$this->uri->segment(1));
$this->smarty->assign('userdata',$this->session->all_userdata());
if($this->session->userdata('logged_in') != TRUE && $this->uri->segment(1) != 'login'){
if($this->session->userdata('logged_in') != TRUE){
print_r($this->session->all_userdata());
}
//redirect('login', 'refresh');
}
}
}
I am using modular extensions. I am sure there is nothing wrong in My_Controller because I tested it by setting it back to MX_Controller. (I never changed anything in MX_Controller)

Answer 1

I found the answer to my question. In my model I was adding all data of the logged in user. One of the columns contain the IP Address. And I don't know why exactly but when I add the IP Address to the session it removes the session, and adds a new session with the default codeigniter session data and a new session id.
So somehow I can't store IP Addresses in my userdata.