Subtract time in PHP

Question

I have been looking for an answer for a few hours now, but I can\'t find one.

I\'m writing a simple script. The user sets their work start and end time.

Answer 1

A bit nicer is the following:

$a = new DateTime('08:00');
$b = new DateTime('16:00');
$interval = $a->diff($b);

echo $interval->format("%H");

That will give you the difference in hours.