How to destroy session with browser closing in codeigniter

Question

Recently I have developed a web application with codeigniter. I am facing a session related problem there badly.

Problem scenario:

If user

Answer 1

Simply set sess_expiration =0 in application/config/config.php file as stated in Codeigniter documentation

Answer 2

Well, I don't know if you already had the solution, but I found myself in the same scenario in CodeIgniter version 3.0. In config.php, go to Session Variables section and you can set:

$config['sess_expiration'] = 0;

sess_expiration: The number of seconds you would like the session to last. If you would like a non-expiring session (until browser is closed) set the value to zero: 0

Answer 3

You can use javascript and asynchron request. When you close the window, the handler of window.onunload is called

var unloadHandler = function(e){
        //here ajax request to close session
  };
window.unload = unloadHandler;

To solve the problem of redirection, php side you can use a counter

  class someController  extends Controller {

   public function methodWithRedirection(){

        $this->session->set_userdata('isRedirection', 1);
        //here you can redirect  
   }
}
class homeController extends Controller{
   public function closeConnection(){
        $this->load->library('session');
        if($this->session->userdata('isRedirection')!== 1){
            //destroy session
         }
      }
   }  

Answer 4

for CI-3.0.4 locate the items below inside "config.php" and set accordingly

$config['sess_expiration'] = -1;
$config['sess_time_to_update'] = -1;

Answer 5

Add a logout button.

Have that button destroy the session with CI's built in destroy function.

$this->session->sess_destroy();

Answer 6

Edit the config.php file and set sess_expire_on_close to true.

e.g

$config['sess_expire_on_close'] = TRUE;