How CodeIgniter keeps session data even when browser closes?

The session in CodeIgniter do not use the default PHP $_SESSION . It uses its own implementation with cookies. That's why it's not destroyed when you close your browser.

You can also use session with database in CodeIgniter with the option $config'sess_use_database' = TRUE and other things you will find here : http://codeigniter.com/user_guide/libraries/sessions.html.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.