(PHP 5.5.0, PECL >= 3.0.0a1)
IntlCalendar::setTimeZone — Set the timezone used by this calendar
Defines a new timezone for this calendar. The time represented by the object is preserved to the detriment of the field values.
timeZone
The new timezone to be used by this calendar. It can be specified in the following ways:
NULL, in which case the default timezone will be used, as specified in
the ini setting date.timezone or
through the function date_default_timezone_set() and as
returned by date_default_timezone_get().
An IntlTimeZone, which will be used directly.
A DateTimeZone. Its identifier will be extracted and an ICU timezone object will be created; the timezone will be backed by ICUʼs database, not PHPʼs.
A string, which should be a valid ICU timezone identifier. See IntlTimeZone::createTimeZoneIDEnumeration(). Raw offsets such as "GMT+08:30" are also accepted.
Returns TRUE on success and FALSE on failure.
Example #1 IntlCalendar::setTimeZone()
<?php
ini_set('date.timezone', 'Europe/Lisbon');
ini_set('intl.default_locale', 'es_ES');
$cal = new IntlGregorianCalendar(2013, 5 /* May */, 1, 12, 0, 0);
echo IntlDateFormatter::formatObject($cal, IntlDateFormatter::FULL), "\n";
echo "(instant {$cal->getTime()})\n";
$cal->setTimeZone(IntlTimeZone::getGMT());
echo IntlDateFormatter::formatObject($cal, IntlDateFormatter::FULL), "\n";
echo "(instant {$cal->getTime()})\n";
$cal->setTimeZone('GMT+03:33');
echo IntlDateFormatter::formatObject($cal, IntlDateFormatter::FULL), "\n";
echo "(instant {$cal->getTime()})\n";
以上例程会输出：
sábado, 1 de junio de 2013 12:00:00 Hora de verano de Europa occidental (instant 1370084400000) sábado, 1 de junio de 2013 11:00:00 GMT (instant 1370084400000) sábado, 1 de junio de 2013 14:33:00 GMT+03:33 (instant 1370084400000)