ConFoo 2025

DateTimeImmutable::setDate

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

DateTimeImmutable::setDateSets the date

说明

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

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