What is the name of the time format PT00H00M00S and what languages use it?

Question

I\'m working with excel documents using PHP scripts and cannot determine what data type/format PT00H00M00S is, and subsequently I can\'t find a way to work with it without u

Answer 1

It is an ISO 8601 duration.

See this brief overview: http://en.wikipedia.org/wiki/ISO_8601#Durations

Many languages have tools available to work with them, including PHP in the form of DateInterval.

Answer 2

It's a time interval, where the P means period. You can use PHP's DateInterval() to parse the string.

For example (example taken from the PHP documentation):

$interval = new DateInterval('P2Y4DT6H8M');
echo $interval->format('%d days');