RFC 3339 how make a dateTime from - php

Question

I'm trying to format a date passed from a google plus Api thats like the guide says in RFC 3339 format:
PUBLISHED-> datetime-> The time at which this activity was initially published. Formatted as an RFC 3339 timestamp.
So by php documentation i found that:
DATE_RFC3339
Same as DATE_ATOM (since PHP 5.1.3)
And that both format are something like:
"Y-m-d\TH:i:sP"
Actually the output of the Google api is something like:
2014-01-22T10:36:00.222Z
When I'm trying to launch command like:
$date = DateTime::createFromFormat("Y-m-d\TH:i:sP", $activity['published']); //$activity['published'] contain the date
I have always FALSE as return.
In my opinion the problem is in the final part
.222Z
any suggestion will be appreciate before cutting it by some rudimental approach...

Answer 1

You don't need to use DateTime::createFromFormat() for standard inputs. Just use:
$date = new DateTime('2014-01-22T10:36:00.222Z');
var_dump($date);
But if you still insist to use createFromFormat(), then use correct format, with microseconds:
$date = DateTime::createFromFormat('Y-m-d\TH:i:s.uP', '2014-01-22T10:36:00.222Z');
var_dump($date);

Answer 2

There is a trick. A special constant DATE_RFC3339 was made to help, but it does not work if the last character is "Z" - which is perfectly fine for rfc3339 format. Actually JSON would specify format like that:
expected format YYYY-MM-DDThh:mm:ssZ or YYYY-MM-DDThh:mm:ss+hh:mm
But using this DATE_RFC3339 you can receive an Error message from PHP:
InvalidArgumentException: The timezone could not be found in the database
That is why we need to specify format manually:
With DateTime
$date = DateTime::createFromFormat ('Y-m-d\TH:i:s.u\Z', $time);
With Carbon:
\Carbon\Carbon::createFromFormat('Y-m-d\TH:i:s.u\Z', $time);