DateTimeImmutable::setDate

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

DateTimeImmutable::setDate — Sets the date

说明

#[\NoDiscard]
public DateTimeImmutable::setDate(int $year, int $month, int $day): DateTimeImmutable

Returns a new DateTimeImmutable object with the current date of the DateTimeImmutable object set to the given date.

参数

object
仅过程化风格：由 date_create() 返回的 DateTime 类型的对象。此函数会修改这个对象。
year

Year of the date.

month

Month of the date.

day

Day of the date.

返回值

返回带有修改数据的新 DateTimeImmutable 对象。

示例

示例 #1 DateTimeImmutable::setDate() example

面向对象风格

<?php
$date = new DateTimeImmutable();
$newDate = $date->setDate(2001, 2, 3);
echo $newDate->format('Y-m-d');

以上示例会输出：

2001-02-03

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

<?php
$date = new DateTimeImmutable();

$newDate = $date->setDate(2001, 2, 28);
echo $newDate->format('Y-m-d') . "\n";

$newDate = $date->setDate(2001, 2, 29);
echo $newDate->format('Y-m-d') . "\n";

$newDate = $date->setDate(2001, 14, 3);
echo $newDate->format('Y-m-d') . "\n";

以上示例会输出：

2001-02-28
2001-03-01
2002-02-03

参见