CascadiaPHP 2024


(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)

IntlCalendar::equalsCompare time of two IntlCalendar objects for equality


Object-oriented style

public IntlCalendar::equals(IntlCalendar $other): bool

Procedural style

intlcal_equals(IntlCalendar $calendar, IntlCalendar $other): bool

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.



An IntlCalendar instance.


The calendar to compare with the primary object.

Return Values

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.


Example #1 IntlCalendar::equals()

('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
$cal2 = IntlCalendar::createInstance(NULL, 'pt_PT');
var_dump($cal1->equals($cal2)); //TRUE

//And set fields state is not included as well
var_dump($cal1->isSet(IntlCalendar::FIELD_YEAR) ==
$cal2->isSet(IntlCalendar::FIELD_YEAR)); //FALSE
var_dump($cal1->equals($cal2)); //TRUE

//Neither is the calendar type
$cal2 = IntlCalendar::createInstance(NULL, 'es_ES@calendar=islamic');
var_dump($cal1->equals($cal2)); //TRUE

//Only the time is
$cal2 = clone $cal1;
$cal2->setTime($cal1->getTime() + 1.);
var_dump($cal1->equals($cal2)); //FALSE

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