How can one handle large values for hours when formatting time in PHP?

When formatting time in PHP, large values for hours can be handled by using the `DateTime` class along with the `DateInterval` class to accurately calculate and format the time. By utilizing these classes, PHP can handle large hour values without causing unexpected errors or inaccuracies in the time formatting.

$hours = 1000;
$interval = DateInterval::createFromDateString($hours . ' hours');
$date = new DateTime();
$date->add($interval);
$formatted_time = $date->format('H:i:s');
echo $formatted_time;