(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)
IntlCalendar::getSkippedWallTimeOption — Get behavior for handling skipped wall time
面向对象风格
过程化风格
Gets the current strategy for dealing with wall times that are skipped
whenever the clock is forwarded during dailight saving time start transitions.
The default value is IntlCalendar::WALLTIME_LAST.
The calendar must be lenient for this option to have any effect, otherwise attempting to set a non-existing time will cause an error.
This function requires ICU 4.9 or later.
calendarAn IntlCalendar instance.
One of the constants IntlCalendar::WALLTIME_FIRST,
IntlCalendar::WALLTIME_LAST or
IntlCalendar::WALLTIME_NEXT_VALID.
Example #1 IntlCalendar::getSkippedWallTimeOption()
<?php
ini_set('date.timezone', 'Europe/Lisbon');
ini_set('intl.default_locale', 'en_US');
ini_set('intl.error_level', E_WARNING);
//On March 31st at 0100, the clock goes forward 1 hour and from GMT+00 to GMT+01
$cal = new IntlGregorianCalendar(2013, 2 /* March */, 31, 1, 30);
var_dump(
$cal->isLenient(), // true
$cal->getSkippedWalltimeOption() // 0 WALLTIME_LAST
);
$formatter = IntlDateFormatter::create(
NULL,
IntlDateFormatter::FULL,
IntlDateFormatter::FULL,
'UTC'
);
var_dump($formatter->format($cal->getTime() / 1000));
$cal->setSkippedWallTimeOption(IntlCalendar::WALLTIME_FIRST);
var_dump($cal->getSkippedWalltimeOption()); // 1 WALLTIME_FIRST
$cal->set(IntlCalendar::FIELD_HOUR_OF_DAY, 1);
var_dump($formatter->format($cal->getTime() / 1000));
$cal->setSkippedWallTimeOption(IntlCalendar::WALLTIME_NEXT_VALID);
var_dump($cal->getSkippedWalltimeOption()); // 2 WALLTIME_NEXT_VALID
$cal->set(IntlCalendar::FIELD_HOUR_OF_DAY, 1);
var_dump($formatter->format($cal->getTime() / 1000));
以上例程会输出：
bool(true) int(0) string(40) "Sunday, March 31, 2013 at 1:30:00 AM GMT" int(1) string(41) "Sunday, March 31, 2013 at 12:30:00 AM GMT" int(2) string(40) "Sunday, March 31, 2013 at 1:00:00 AM GMT"