I'm looking for an answer for few hours now, but I can't find one.
I'm writing simple script. User set work start time, and end time. So for example somebody is working from 8:00 to 16:00.
How Can I subtract this time to see how long person has been working?
I was experimenting with strtotime(); but without success...
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.