How would I calculate this?

Question

I have a website where users enter data including hours, for example they enter '1:00' (Meaning = 1 hour) and '00:15' (Meaning = 15 minutes) and '2:30' (Meaning = 2 hour and 30 minutes).

Now I need to make show them how many hours they have entered in total, when I calculate it by just doing $count += $time in a loop I am getting the correct number but not what is standing after the ':'.

1:00 + 00:15 + 2:30 will become '3' while it should be 3:45.

How would I do this? Also now that I am thinking about it, I will also need if it goes over 60 it adds 1 to the first number (A new hour).

Thanks.

Answer 1

First, calculates minutes, then calculate how many hours are those minutes and add them to the hours:

<?php foreach ($data as $entry) {
  list($hour, $minutes) = explode(':', $entry);
  $total_hours += $hour;
  $total_minutes += $minutes;
}
$hours_from_minutes = floor($total_minutes / 60);
$total_hours += $hours_from_minutes;
$total_minutes -= $hours_from_minutes * 60;
echo "$total_hours:$total_minutes"