Session Timeout in codeigniter dyanamicly

Question

I have issue regarding codeigniter Timeout .

I know the config folder setting session timeout manually like as l

$config['sess_expiration']      = 123;

but i need to the website admin manage the session time out dyanamicly in to the admin page

please help me how to implement this logic

i tried this logic but not working

$this->session->sess_expiration = "120";

Note:here i am storing database in the value. based on the database value i can set in to the session expiration time

note 1: $config['sess_time_to_update'] = 30; this value less than of session expiration time

Total Logic code:

public function edit($id)
    {
        Assets::add_css('../plugins/forms/uniform/uniform.default.css');
        Assets::add_css('../plugins/forms/select/select2.css');
        Assets::add_css('../plugins/forms/validate/validate.css');
        Assets::add_css('../plugins/misc/qtip/jquery.qtip.css');
        Assets::add_js('../plugins/charts/sparkline/jquery.sparkline.min.js');
        Assets::add_js('../plugins/forms/uniform/jquery.uniform.min.js');
        Assets::add_js('../plugins/forms/select/select2.min.js');
        Assets::add_js('../plugins/forms/validate/jquery.validate.min.js');
        Assets::add_js('../plugins/forms/wizard/jquery.bbq.js');
        Assets::add_js('../plugins/forms/wizard/jquery.form.js');
        Assets::add_js('../plugins/forms/wizard/jquery.form.wizard.js');
        Assets::add_module_js('setting','setting'); 
        if ($_POST)
       {
            $current_date = date("Y-m-d H:i:s");
            $data = array(
                            's_meta_value' => $this->input->post('s_meta_value'),
                            'updated_on' => $current_date
                          );
            $this->setting_model->session_mng_update($data,$id);
            $session_val=  $this->input->post('s_meta_value');
           if($session_val == 0)
           {
             $this->session->sess_expiration = '0';
           }
           else
           {          

            $this->session->sess_expiration = "120";
          // $val1 = $this->config->item('sess_expiration');
       // print_r($val1);
            //$session_seconds = ($session_val*60);
          $val2 = $this->config->set_item('sess_expiration',50);
          $this->session->CI_Session();
         //$val1=  $this->config->set_item('sess_expiration',50);
            $val3 = $this->config->item('sess_expiration');
             print_r($val3);exit;


           }

            Template::redirect('setting/setting/display');


        } 

       $val3 = $this->config->item('sess_expiration');
        print_r($val3);exit;
        $data = $this->setting_model->session_mng_edit($id);
        Template::set('page_title', 'Edit Session Management');
        Template::set('data', $data);
        Template::set_view('setting/session_management/edit_session_management');
        Template::render();       
}

Answer 1

You should use something like this:

$remember_me = $this->input->post('remember_me');
if ($remember_me == 'remember_me')
{
    //set session to non-expiring
    $this->session->sess_expiration = '32140800'; //~ one year
    $this->session->sess_expire_on_close = 'false';
    #$this->session->set_userdata($session_data);
}
else
{
    //set session expire time, after that user should login again
    $this->session->sess_expiration = '1800'; //30 Minutes
    $this->session->sess_expire_on_close = 'true';
    #$this->session->set_userdata($session_data);
}

//set session and go to Dashboard or Admin Page
$this->session->set_userdata(array(
    'id' => $result[0]['id'],
    'username' => $result[0]['username']
));

Answer 2

First of all you could set cookies for this process via $this->input->set_cookie(). But if you want to overwrite the config variable then try

$this->config->set_item('sess_expiration',120);

Also call the session constructor to update the value by

$this->session->CI_Session();