php - Did PHP date interval format come from another programming language?

Question

Does anyone know if PHP date interval format such as P2Y4DT6H8M came from another language?

I am trying to determine if PHP date interval formatting can be used by multiple languages.

More examples of DateInterval formats can be found here: http://php.net/manual/en/dateinterval.format.php

Answer 1

是的，根据文档，它是ISO8601。