Retrive some data store in session with codeigniter - ajax

Question

I need to store some data that i get via an ajax request on a method, and later retrive them when i call another method.
public function updateInt()
{ $this->load->library('session');
$interval = $this->input->post('_interval');
$aInt = array('my_interval' => $interval);
$this->session->set_userdata('post', $aInt);
$_interval_ = $this->session->userdata['post']['my_interval'];
return $_interval_;
}
public function getInt()
{
$interval = $this->updateInt();
// print $interval and do some stuff !!
}
// This return a null, but I need the value set on the front-end by the user and passed with an ajax call to updateInt() method.
I need some help because I'm newbie with codeignter.

Answer 1

Make sure you have set your sessions in your config.php do not leave the session save path null
Example
$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 7200;
$config['sess_save_path'] = APPPATH . 'cache/session/';
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;
Make sure session folder permission 0700
Make sure you are getting correct post data what your after
public function updateInt()
{
// You can autoload it in config/autoload.php saves loading every page
$this->load->library('session');
$aInt = array('my_interval' => $this->input->post('_interval'));
$this->session->set_userdata('post', $aInt);
// Use `(` and `)` not `[]`
$interval = $this->session->userdata('post');
return $interval;
}
public function getInt()
{
$interval = $this->updateInt();
// Test
echo $interval['my_interval'];
// print $interval and do some stuff !!
}