On my site, UserID (an integer) is a session variable. I'll create a structure that has the following three columns:
userid last
"last" will be a datetime stamp that'll update every time they send a request to the site, i.e., click on something. Then every 15 minutes, I'll run a "cleanup" script that'll knock out any "last" values that are in excess of 15 minutes from Now(). Does this sound like a viable option? Thanks!
- Sung
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