- var_dump: documentation ( source)
<?php
function getDiffInHours(\DateTime $earlierDate, \DateTime $laterDate)
{
$utc = new \DateTimeZone('UTC');
//Avoid side effects
$first = clone $earlierDate;
$second = clone $laterDate;
//First convert to UTC to avoid missing hours due to DST etc
$first->setTimezone($utc);
$second->setTimezone($utc);
$diff = $first->diff($second);
return 24 * $diff->days + $diff->h;
}
$hours = getDiffInHours(new \DateTime(), new \DateTime('+ 31 hours'));
var_dump($hours); //31