PHP date comparison

Question

How would I check if a date in the format \"2008-02-16 12:59:57\" is less than 24 hours ago?

Answer 1

e.g. via strtotime and time().
The difference must be less then 86400 (seconds per day).

prints

now: 2009-12-03 18:02:29
2008-02-16 12:59:57 56696552 -
2009-12-02 13:00:00 104549 -
2009-12-02 20:00:00 79349 +

only the last test date/time lays less than 24 hours in the past.