datetime.php

<?php

	date_default_timezone_set('UTC');
        var_dump(date_default_timezone_get());

        $dt = new \DateTime('2015-07-01T00:00:00+0200');
        var_dump($dt->format('c'));
        $dt->setTimezone(new \DateTimeZone('UTC'));
        var_dump($dt->format('c'));

        $dt = new Time('2015-07-01T00:00:00+0200');
        var_dump($dt->format('c'));
        var_dump($dt->formatLocalized('%c'));
        $dt->setTimezone(new \DateTimeZone('UTC'));
        var_dump($dt->format('c'));
        var_dump($dt->formatLocalized('%c'));


        date_default_timezone_set('Europe/Paris');
        var_dump(date_default_timezone_get());

        $dt = new \DateTime('2015-07-01T00:00:00+0200');
        var_dump($dt->format('c'));
        $dt->setTimezone(new \DateTimeZone('UTC'));
        var_dump($dt->format('c'));

        $dt = new Time('2015-07-01T00:00:00+0200');
        var_dump($dt->format('c'));
        var_dump($dt->formatLocalized('%c'));
        $dt->setTimezone(new \DateTimeZone('UTC'));
        var_dump($dt->format('c'));
        var_dump($dt->formatLocalized('%c'));