(PHP 5 >= 5.5.0, PHP 7, PECL >= 3.0.0a1)
IntlCalendar::getRepeatedWallTimeOption — Get behavior for handling repeating wall time
面向对象风格
过程化风格
Gets the current strategy for dealing with wall times that are repeated
whenever the clock is set back during dailight saving time end transitions.
The default value is IntlCalendar::WALLTIME_LAST.
This function requires ICU 4.9 or later.
calThe IntlCalendar resource.
One of the constants IntlCalendar::WALLTIME_FIRST or
IntlCalendar::WALLTIME_LAST.
Example #1 IntlCalendar::getRepeatedWallTimeOption()
<?php
ini_set('date.timezone', 'Europe/Lisbon');
ini_set('intl.default_locale', 'en_US');
ini_set('intl.error_level', E_WARNING);
//On October 27th at 0200, the clock goes back 1 hour and from GMT+01 to GMT+00
$cal = new IntlGregorianCalendar(2013, 9 /* October */, 27, 1, 30);
var_dump($cal->getRepeatedWalltimeOption()); // 0 WALLTIME_LAST
$formatter = IntlDateFormatter::create(
NULL,
IntlDateFormatter::FULL,
IntlDateFormatter::FULL,
'UTC'
);
var_dump($formatter->format($cal->getTime() / 1000.));
$cal->setRepeatedWalltimeOption(IntlCalendar::WALLTIME_FIRST);
var_dump($cal->getRepeatedWalltimeOption()); // 1 WALLTIME_FIRST
$cal->set(IntlCalendar::FIELD_HOUR_OF_DAY, 1);
var_dump($formatter->format($cal->getTime() / 1000.));
以上例程会输出：
int(0) string(42) "Sunday, October 27, 2013 at 1:30:00 AM GMT" int(1) string(43) "Sunday, October 27, 2013 at 12:30:00 AM GMT"