PHP | IntlCalendar createInstance() Function

Last Updated : 28 Mar, 2022

The IntlCalendar::createInstance() function is an inbuilt function in PHP which is used to create an instance of IntlCalendar. Syntax:

Object oriented style:

IntlCalendar IntlCalendar::createInstance( mixed $timeZone = NULL, string $locale = "" )

Procedural style:

IntlCalendar intlcal_create_instance( mixed $timeZone = NULL, string $locale = "" )

Parameters:

$timeZone: This parameter holds the used timezone.
- NULL: It is the default timezone.
- IntlTimeZone: It is used directly.
- DateTimeZone: It allows to set the timezone in DateTimeZone format. The identifier of DateTimeZone will be extracted and an ICU timezone object will be created.
- string: It is a valid ICU timezone identifier.
$locale: This parameter holds the locale to use or NULL to use the default locale.

Return Value: This function creates an IntlCalendar instance on success or NULL on failure. Below programs illustrate the IntlCalendar::createInstance() function in PHP: Program 1:

php

<?php

// Create an IntlCalendar instance
$calendar1 = IntlCalendar::createInstance();

// Create an IntlCalendar from a DateTime object or string
$calendar2 = IntlCalendar::fromDateTime('2019-03-21 09:19:29');

// Use IntlCalendar::before() function
var_dump($calendar1->before($calendar2));
var_dump($calendar2->before($calendar1));

// Use IntlCalendar::before() function
var_dump($calendar1->after($calendar2));
var_dump($calendar2->after($calendar1));
        
?>

Output:

bool(false)
bool(true)
bool(true)
bool(false)

Program 2:

php

<?php

// Create an IntlCalendar from a DateTime object or string
$calendar1 = IntlCalendar::fromDateTime('2019-03-21 09:19:29');

// Create an instance of IntlCalendar
$calendar2 = IntlCalendar::createInstance(NULL, 'en_US');

// Set DateTime of $calendar2 to $calendar1
$calendar2->setTime($calendar1->getTime());

// Use IntlCalendar::equals() function to cCompare time
// of two IntlCalendar objects and display result
var_dump($calendar1->equals($calendar2));
        
?>

Output:

bool(true)

Reference: https://www.php.net/manual/en/intlcalendar.createinstance.php

PHP | IntlCalendar::__construct() Function

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