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    IntlCalendar::getFirstDayOfWeek

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

    IntlCalendar::getFirstDayOfWeek — Get the first day of the week for the calendarʼs locale

    说明

    面向对象风格

    public IntlCalendar::getFirstDayOfWeek(): int|false

    过程化风格

    intlcal_get_first_day_of_week(IntlCalendar $calendar): int|false

    The week day deemed to start a week, either the default value for this locale or the value set with IntlCalendar::setFirstDayOfWeek().

    参数

    calendar

    IntlCalendar 实例。

    返回值

    One of the constants IntlCalendar::DOW_SUNDAY, IntlCalendar::DOW_MONDAY, …, IntlCalendar::DOW_SATURDAY 或者在失败时返回 false.

    示例

    示例 #1 IntlCalendar::getFirstDayOfWeek()

    <?php
    ini_set    ('date.timezone', 'UTC');

    $cal1 = IntlCalendar::createInstance(NULL, 'es_ES');
    var_dump($cal1->getFirstDayOfWeek()); // Monday
    $cal1->set(2013, 1 /* February */, 3); // a Sunday
    var_dump($cal1->get(IntlCalendar::FIELD_WEEK_OF_YEAR)); // 5

    $cal2 = IntlCalendar::createInstance(NULL, 'en_US');
    var_dump($cal2->getFirstDayOfWeek()); // Sunday
    $cal2->set(2013, 1 /* February */, 3); // a Sunday
    var_dump($cal2->get(IntlCalendar::FIELD_WEEK_OF_YEAR)); // 6

    以上示例会输出：

    int(2)
int(5)
int(1)
int(6)

    参见

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