get php DateInterval in total 'minutes'

Question

I am trying to get the PHP \"DateInterval\" value in \"total minutes\" value. How to get it? Seems like simple format(\"%i minutes\") not working?

Here is the sampl

Answer 1

Here is the excepted answer as a method in PHP7.2 style:

/**
 * @param \DateTime $a
 * @param \DateTime $b
 * @return int
 */
public static function getMinutesDifference(\DateTime $a, \DateTime $b): int
{
    return abs($a->getTimestamp() - $b->getTimestamp()) / 60;
}