Question

I am helping develop a web application for one of the departments in the company I work for.
I was asked to look into a way to log off every user that might be on the application at once, so that if updates to the Web App are pushed out, people aren’t working with an old version of it.

My problem is that as I am not very savvy with PHP, JQuery, AJAX, etc. which is what we’re using, I have not known exactly what to look for.

We have a timer script running every couple seconds in the background, so I was thinking that I could add an admin button that updated a field in the database which this script could check every so often, and if the field was set, the logoff script could be executed. But this seems like a hack to work around the issue.

The guy I’m working with suggested I look into custom SESSION handlers.

What do you guys think? Any ideas?

Any help would be appreciated. Even if it’s an idea on what to start searching for.

Thanks in advance!

EDIT: I should mention that this is a one-page web app. The user is not following any links or leaving the page.

Answer 1

Make an entry for logged in users in your database of choice, maybe memcached if performance is a criteria.