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(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)
IntlCalendar::equals — Compare time of two IntlCalendar objects for equality
面向对象风格
过程化风格
Returns true if this calendar and the given calendar have the same time. The settings, calendar types and field states do not have to be the same.
calendar
IntlCalendar 实例。
other
The calendar to compare with the primary object.
Returns true if the current time of both this and the passed in
IntlCalendar object are the same, or false
otherwise.
On failure false is also returned. To detect error conditions use intl_get_error_code(), or set up Intl to throw exceptions.
示例 #1 IntlCalendar::equals()
<?php
ini_set('date.timezone', 'UTC');
$cal1 = IntlCalendar::createInstance(NULL, 'es_ES');
$cal2 = clone $cal1;
var_dump($cal1->equals($cal2)); //TRUE
//The locale is not included in the comparison
$cal2 = IntlCalendar::createInstance(NULL, 'pt_PT');
$cal2->setTime($cal1->getTime());
var_dump($cal1->equals($cal2)); //TRUE
//And set fields state is not included as well
$cal2->clear(IntlCalendar::FIELD_YEAR);
var_dump($cal1->isSet(IntlCalendar::FIELD_YEAR) ==
$cal2->isSet(IntlCalendar::FIELD_YEAR)); //FALSE
var_dump($cal1->equals($cal2)); //TRUE
//Neither is the calendar type
$cal2 = IntlCalendar::createInstance(NULL, 'es_ES@calendar=islamic');
$cal2->setTime($cal1->getTime());
var_dump($cal1->equals($cal2)); //TRUE
//Only the time is
$cal2 = clone $cal1;
$cal2->setTime($cal1->getTime() + 1.);
var_dump($cal1->equals($cal2)); //FALSE
