session - PHP: what is the purpose of session_name

Question

I'm not quite sure what the purpose of session_names is.. Can someone please explain in what circumstances defining a name would be beneficial?

Answer 1

You have two sites on the same domain. (say, a blog and a forum)

They both run different pieces of software.

If they ran on the same session and used the same variables in $_SESSION, (say, user_id), they would conflict.

session_name lets you give each application a different session.