PHP DateTime::createFromFormat AM PM Issue

$format = 'd M Y A h:i';
$date = DateTime::createFromFormat($format, '11 Mar 2013 PM 3:34');

Returns false. getLastErrors returs:

[errors] => Array
    (
        [12] => Unexpected data found.
    )

After removing A in format and PM in date it started to work.

$format = 'd M Y h:i';
$date = DateTime::createFromFormat($format, '11 Mar 2013 3:34');

Any solution how to make it working with AM and PM ?