Session expiration: does it get renewed on each request?

[eluser]aidehua[/eluser]
Thanks, Ricardino. 5-star answer . I'm grateful.

(And sorry, it was kind of lazy/stupid of me not to think of looking in the session library.)

Oh, and thanks, CodeIgniter, too - that seems to be the right way to do it. It would be a bit mean to log someone out after 2 hours even if they had been busily requesting new pages every 5 minutes...