Description:
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From manual page: http://www.php.net/datetime.settimezone
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When I run the test script, $d2 does not have its timezone change, e.g. setTimezone() returns null.

$d1->getTimezone() seems to be valid, although its name via getName() returns "-08:00"

Could this be fixed? Also, it would be nice if all getName() values are valid for the DateTimeZone constructor as well, e.g. why can't this work:

new DateTimeZone("-08:00")

Test script:
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$d1 = new DateTime('2014-02-02T10:00-0800');
$d2 = new DateTime('2014-02-02T11:58+0000');
$d2->setTimezone($d1->getTimezone());
echo "d2: " . $d2->format(DateTime::W3C) . "\n";


Expected result:
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d2: 2014-02-02-T03:58:00-0800

e.g. the time display is relative to the PST time zone.

Actual result:
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d2: 2014-02-02T11:58:00+00:00

e.g. the timezone did not change, since setTimezone() did not succeed.