Convert datetime to RFC 3339

Question

My input date is 2014-03-10 05:40:00. How can I convert it to RFC format like 2014-3-10T05:40:00.000-00:00?

Answer 1

I'd like to add that the predefined constants for this can also be used with date(). Both:

date(DATE_RFC3339);

and

date(DATE_ATOM);

return an RFC3339 formatted date time string and are the equivalent of:

date('Y-m-d\TH:i:sP');