So this question came to me earlier today, and I was wondering what was a accepted way of finding out if there were no active sessions to a WAMP server (so I could restart the server as a whole).
I'm using WAMP installed on a Windows 2003 server. Since HTTP is stateless, and the website in particular was a simple PHP + Flash + MySQL based website, the only way I checked to see if someone was on the website was to look at the access log. Now mind you the website is very very low traffic, goes days without any access. Probably see one access log entry a week or so.
Thinking about it in retrospect, I could've checked the PHP 'sessions store'. I know the programming of the website doesn't do any special session management, so which begs my auxiliary question, where does PHP store session info by default?