Question

How would I be able to return a boolean expression of true once exactly 24 hours have passed and no more?

I am using strtotime() to out put these two times:

$time1 = 1316268919;
$time2 = 1316268898;

Answer 1

This should do what you need:

if (($time1-$time2) == 86400) {
    // Exactly 24 hours have passed.
}