How to tell if a session is active?

Question

Per request, there are a few different ways that you can tell whether or not a session has been started, such as:

$isSessionActive = (session_id() != \"\");
         


        

Answer 1

There are multiple places you need to check to verify the session is active:

1- cookie exists and is not expired 2- underlying session storage mechanism (file system or database) has a record matching the cookie.