Look through the documentation for your database, and let it do the date calculations for you. For example, in mysql, you would do:
DELETE FROM day_time WHERE time < DATE_SUB(NOW(), Interval 24 Hour)

[download]
This saves you from doing your own calculations, and makes sure you don't get bitten by the webserver and db server having clocks that are not in sync. (in the example I gave above, you're trusting the db to be the authoritive source)

In reply to Re: users online script not accurate by cowboy
in thread users online script not accurate by Anonymous Monk

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