PHP 8.1.0 RC 4 available for testing

IntlCalendar::getMinimalDaysInFirstWeek

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

IntlCalendar::getMinimalDaysInFirstWeek特定の年や月における、最初の週の日数の最小値を返す

説明

オブジェクト指向型

public IntlCalendar::getMinimalDaysInFirstWeek(): int|false

手続き型

intlcal_get_minimal_days_in_first_week(IntlCalendar $calendar): int|false

Returns the smallest number of days the first week of a year or month must have in the new year or month. For instance, in the Gregorian calendar, if this value is 1, then the first week of the year will necessarily include January 1st, while if this value is 7, then the week with January 1st will be the first week of the year only if the day of the week for January 1st matches the day of the week returned by IntlCalendar::getFirstDayOfWeek(); otherwise it will be the previous yearʼs last week.

パラメータ

calendar

IntlCalendar クラスのインスタンス。

返り値

日数を示す数値を返します。 失敗した場合に false を返します

例1 IntlCalendar::getMinimalDaysInFirstWeek()

<?php
ini_set
('date.timezone''UTC');
ini_set('intl.default_locale''en_US');

$cal = new IntlGregorianCalendar(2013/* January */2);
var_dump(IntlDateFormatter::formatObject($cal'cccc')); // Wednesday

var_dump($cal->getMinimalDaysInFirstWeek(), // 1
$cal->getFirstDayofWeek()); // 1 (Sunday)

// Week 1 of 2013
var_dump(IntlDateFormatter::formatObject($cal"'Week 'w' of 'Y"));

$cal->setMinimalDaysInFirstWeek(4);
// Still Week 1 of 2013 (1st week has 5 days in the new year)
var_dump(IntlDateFormatter::formatObject($cal"'Week 'w' of 'Y"));

$cal->setMinimalDaysInFirstWeek(6);
// Week 53 of 2012
var_dump(IntlDateFormatter::formatObject($cal"'Week 'w' of 'Y"));

上の例の出力は以下となります。

string(9) "Wednesday"
int(1)
int(1)
string(14) "Week 1 of 2013"
string(14) "Week 1 of 2013"
string(15) "Week 53 of 2012"

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