php session_start with include files

Question

i learned a lot about session start from my previous question. Now i\'m wondering how session locking occurs when files are included in other files. Lets say i have:

Answer 1

I would recommend creating a session.php file that you would include once, at the first line of each page. That way, the session is handled in ONE file, in case you need to change validation or session settings (and don't need to worry about your question).