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

if (strtotime("2008-02-16 12:59:57") >= time() - 24 * 60 * 60)
{ /*LESS*/ }

Answer 2

Just adding another answer, using strtotime's relative dates:

$date = '2008-02-16 12:59:57';
if (strtotime("$date +1 day") <= time()) {
    // Do something
}

I think this makes the code much more readable.