IntlCalendar
PHP Manual

IntlCalendar::getActualMaximum

(PHP 5.5.0, PECL >= 3.0.0a1)

IntlCalendar::getActualMaximum — The maximum value for a field, considering the objectʼs current time

説明

オブジェクト指向型

public int IntlCalendar::getActualMaximum ( int $field )

手続き型

int intlcal_get_actual_maximum ( IntlCalendar $cal , int $field )

Returns a fieldʼs relative maximum value around the current time. The exact semantics vary by field, but in the general case this is the value that would be obtained if one would set the field value into the smallest relative maximum for the field and would increment it until reaching the global maximum or the field value wraps around, in which the value returned would be the global maximum or the value before the wrapping, respectively.

For instance, in the gregorian calendar, the actual maximum value for the day of month would vary between 28 and 31, depending on the month and year of the current time.

パラメータ

cal

The IntlCalendar resource.

field

IntlCalendar の日付/時刻 フィールド定数 のいずれか。 0 から IntlCalendar::FIELD_COUNT までの間の整数値です。

返り値

An int representing the maximum value in the units associated with the given field失敗した場合に FALSE を返します.

例

例1 IntlCalendar::getActualMaximum()

<?php
ini_set('date.timezone', 'Europe/Lisbon');

$cal = IntlCalendar::fromDateTime('2013-02-15');
var_dump($cal->getActualMaximum(IntlCalendar::FIELD_DAY_OF_MONTH)); //28

$cal->add(IntlCalendar::FIELD_EXTENDED_YEAR, -1);
var_dump($cal->getActualMaximum(IntlCalendar::FIELD_DAY_OF_MONTH)); //29

上の例の出力は以下となります。

int(28)
int(29)

参考

IntlCalendar
PHP Manual