Description:
------------
$a= \DateTime::createFromFormat('Y-m-d H:i:s', '2012-01-01 10:56:31');

$formatter = new IntlDateFormatter(
            'it',
            \IntlDateFormatter::FULL,
            \IntlDateFormatter::FULL,
            'Europe/Rome',
            \IntlDateFormatter::GREGORIAN,
            'd-MMMM-Y H:m:s'
        );

echo "\ndate: " . date('d-m-Y H:i:s', $a->getTimestamp()) . "\n";
echo "formatter: " . $formatter->format($a->getTimestamp()) . "\n\n";

Expected result:
----------------
date: 01-01-2012 11:55:38
formatter: 1-gennaio-2012 10:55:38


Actual result:
--------------
date: 01-01-2012 11:55:38
formatter: 1-gennaio-2011 10:55:38