PHP Sessions expiry time - keeping session alive for a specific number of minutes/hours/days

Question

I have a site that creates a Session for shopping carts.

$_SESSION[\'cart\']=array();

It seems as if the server automatically kills the ses

Answer 1

set a cookie and change in you config that the session use cookies

session_start();
set_cookie("PHPSESSID", session_id(), time() + 3600 * 2);

this keep alive your session for 2 hours