Session Timeout in codeigniter dyanamicly - php

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

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();

Answer 2

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']
));