CodeIgniter: unset all userdata, but not destroy the session

Question

Is there a way to unset ALL userdata in a session without having to use session destroy? I'm trying to log my user out and need to unset all userdata one at a time. It's becoming tedious to keep track of all possible userdata set in session. I just want to unset everything that might have been set in userdata.

Answer 1

This is very simple!

 $this->session->unset_userdata('some_name');

or

 $array_items = array('username' => '', 'email' => '');
 $this->session->unset_userdata($array_items);

I hope this helps!

Edit: It looks like you actually don't keep track of anything in your session (kind of strange?). You could call this function I wrote up:

function unset_only() {
    $user_data = $this->session->all_userdata();

    foreach ($user_data as $key => $value) {
        if ($key != 'session_id' && $key != 'ip_address' && $key != 'user_agent' && $key != 'last_activity') {
            $this->session->unset_userdata($key);
        }
    }
}

Of course, that assumes you use the default CI session setup though.

Answer 2

Copied from codeigniter forum:

All it does is kills the users cookie, but the userdata will remain within the session class until the end of the current request. The session will be reinitialised on the next request, and there will be no userdata available. Basically, all it does is severs the link between the user and the server session, but the data still remains until the end of the request.

If it’s that much of an issue, you can do this:

$this->session->userdata = array();

Answer 3

I manage it please try it .

$this->load->library('session');

// write parameter your session data

$this->session->unset_userdata('sessiondata');

// if you want to session unset group then try it

$array_items = array('username' => '', 'email' => '');

$this->session->unset_userdata($array_items);

Answer 4

You can try this one. In the latest version above code is not working.

$unset_array_items = array('token_id', 'last_id');
$this->session->unset_userdata($unset_array_items);