PHP Manual: Set a date fields

public void IntlCalendar::setDate(int $year, int $month, int $dayOfMonth)

Sets a date fields to the given value.

year: The new value for IntlCalendar::FIELD_YEAR.
month: The new value for IntlCalendar::FIELD_MONTH. The month sequence is zero-based, i.e., January is represented by 0, February by 1, …, December is 11 and Undecember (if the calendar has it) is 12.
dayOfMonth: The new value for IntlCalendar::FIELD_DAY_OF_MONTH.

No value is returned.

Example #1 IntlCalendar::setDate example

<?php
$intlCal = IntlCalendar::createInstance('UTC');

$intlCal->setDate(2012, 1, 29);
?>