DateTimeImmutable::setISODate

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

DateTimeImmutable::setISODate — Sets the ISO date

说明

public DateTimeImmutable::setISODate(int $year, int $week, int $dayOfWeek = 1): DateTimeImmutable

Returns a new DateTimeImmutable object with the date set according to the ISO 8601 standard - using weeks and day offsets rather than specific dates.

参数

year: Year of the date.
week: Week of the date.
dayOfWeek: Offset from the first day of the week.

返回值

返回带有修改数据的新 DateTimeImmutable 对象。

示例

示例 #1 DateTimeImmutable::setISODate() example

面向对象风格

<?php
$date = new DateTimeImmutable();

$date->setISODate(2008, 2);
echo $date->format('Y-m-d') . "\n";

$date->setISODate(2008, 2, 7);
echo $date->format('Y-m-d') . "\n";
?>

过程化风格

<?php
$date = date_create();

date_isodate_set($date, 2008, 2);
echo date_format($date, 'Y-m-d') . "\n";

date_isodate_set($date, 2008, 2, 7);
echo date_format($date, 'Y-m-d') . "\n";
?>

以上示例会输出：

2008-01-07
2008-01-13

示例 #2 Values exceeding ranges are added to their parent values

<?php
$date = new DateTimeImmutable();

$newDate = $date->setISODate(2008, 2, 7);
echo $newDate->format('Y-m-d') . "\n";

$newDate = $date->setISODate(2008, 2, 8);
echo $newDate->format('Y-m-d') . "\n";

$newDate = $date->setISODate(2008, 53, 7);
echo $newDate->format('Y-m-d') . "\n";
?>

以上示例会输出：

2008-01-13
2008-01-14
2009-01-04

示例 #3 Finding the month a week is in

<?php
$date = new DateTimeImmutable();
$newDate = $date->setISODate(2008, 14);
echo $newDate->format('n');
?>

以上示例会输出：

参见

DateTimeImmutable::setDate() - Sets the date
DateTimeImmutable::setTime() - Sets the time

发现了问题？

了解如何改进此页面 • 提交拉取请求 • 报告一个错误

＋添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

备份地址：http://www.lvesu.com/blog/php/datetimeimmutable.setisodate.php