IntlCalendar::inDaylightTime
(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
IntlCalendar::inDaylightTime — Whether the objectʼs time is in Daylight Savings Time
説明
オブジェクト指向型
public IntlCalendar::inDaylightTime ( ) : bool
手続き型
intlcal_in_daylight_time
( IntlCalendar $cal
) : bool
Whether, for the instant represented by this object and for this objectʼs timezone, daylight saving time is in place.
パラメータ
cal- The IntlCalendar resource.
返り値
Returns true if the date is in Daylight Savings Time, false otherwise.
The value false may also be returned on failure, for instance after
specifying invalid field values on non-lenient mode; use exceptions or query
intl_get_error_code() to disambiguate.
例
例1 IntlCalendar::inDaylightTime()
<?phpini_set('date.timezone', 'Europe/Lisbon');ini_set('intl.default_locale', 'pt_PT');$cal = new IntlGregorianCalendar(2013, 6 /* July */, 1, 4, 56, 31);var_dump($cal->inDaylightTime()); // true$cal->set(IntlCalendar::FIELD_MONTH, 11 /* December */);var_dump($cal->inDaylightTime()); // false//DST end transition on 2013-10-27 at 0200 (wall time back 1 hour)$cal = new IntlGregorianCalendar(2013, 9 /* October */, 27, 1, 30, 0);var_dump($cal->inDaylightTime()); // false (default WALLTIME_LAST)$cal->setRepeatedWallTimeOption(IntlCalendar::WALLTIME_FIRST);$cal->set(IntlCalendar::FIELD_HOUR_OF_DAY, 1); // force time recalculationvar_dump($cal->inDaylightTime()); // true
