Online users time tracking

Hello, for several days i`m searching for a snippet that can track registered users and show the total time pended on the site and save all the data to the db.
Something like this .
I dined`t find nothing relevant so i wanted to ask you guys if such snippet exists for modx.

Thanks for support.

try this:
www.google.com/analytics/

Thk for your response but that not even close, Google analytics track the user, but i want the registered users to track the time they spend on the site, not all the traffic.

Not that I know of. You would need to set up a table to store that information. The active_users table shows who is online and what they are doing, but that changes as the user moves from page to page. Probably a plugin would be better for this, since it would be triggered by the onWebLogin event, then store it all in the database with the onWebLogout event.

Thk for the tip