problem about track-Collection of common programming errors

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  user1333603
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  user1260310
  php session user track
  I want to show users who else is logged in as part of a comment system. What are best practices for keeping track of users? For example:Do you keep track of all sessions and then mark them as closed. Or do you delete users upon logout, keeping track only of active users.I’m thinking I should create a table with userid, time logged in, time logged out and/or status. Is that the way to go or is there some alternative approach of tracking session ids. If using a table, is there value in keepin

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