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IntlCalendar::__construct() is a constructor method in PHP's internationalization extension (intl) for handling calendar-related functionality. It is used to create a new IntlCalendar object.

The constructor has several parameters that can be used to initialize the calendar object with specific settings. These parameters can include the calendar type, timezone, and locale.

Here is an example usage of the IntlCalendar::__construct() method:

php
$calendar = new IntlCalendar(0, 'en_US');


In this example, the calendar object is created with the default calendar type (0 represents the default calendar type) and the 'en_US' locale. You can replace 'en_US' with any other supported locale value.

The constructor is called when you create a new instance of the IntlCalendar class, and it sets up the object with the specified calendar type and locale. You can then use this object to perform various calendar operations such as getting the current date, manipulating dates, and formatting dates according to the specified calendar system.

Please note that the IntlCalendar class is part of the intl extension, which needs to be installed and enabled in PHP for this code to work.