title: I want to set the session in codeigniter to never gets expired
body: <p>I have set <code>$config['sess_expiration'] = 2592000</code> and <code>$config['sess_expire_on_close'] = FALSE</code> in my config file but still it expires the session on browser close. I want the sessions gets stored for atleast 30 days and not even expire on browser close. Please suggest me the way to do it.</p>
  
  <p>I also tried setting the <code>$config['sess_expiration'] = 0</code> to never expire the session, but it doesn't work.</p>