PHP - Manual: DateTimeImmutable

2024-12-21

The DateTimeImmutable class

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

简介

Representation of date and time.

This class behaves the same as DateTime except new objects are returned when modification methods such as DateTime::modify() are called.

类摘要

class DateTimeImmutable implements DateTimeInterface {

/* 继承的常量 */

const string DateTimeInterface::ATOM = "Y-m-d\TH:i:sP";

const string DateTimeInterface::COOKIE = "l, d-M-Y H:i:s T";

const string DateTimeInterface::ISO8601 = "Y-m-d\TH:i:sO";

const string DateTimeInterface::RFC822 = "D, d M y H:i:s O";

const string DateTimeInterface::RFC850 = "l, d-M-y H:i:s T";

const string DateTimeInterface::RFC1036 = "D, d M y H:i:s O";

const string DateTimeInterface::RFC1123 = "D, d M Y H:i:s O";

const string DateTimeInterface::RFC7231 = "D, d M Y H:i:s \G\M\T";

const string DateTimeInterface::RFC2822 = "D, d M Y H:i:s O";

const string DateTimeInterface::RFC3339 = "Y-m-d\TH:i:sP";

const string DateTimeInterface::RFC3339_EXTENDED = "Y-m-d\TH:i:s.vP";

const string DateTimeInterface::RSS = "D, d M Y H:i:s O";

const string DateTimeInterface::W3C = "Y-m-d\TH:i:sP";

/* 方法 */

public __construct(string $datetime = "now", ?DateTimeZone $timezone = null)

public add(DateInterval $interval): DateTimeImmutable

public static createFromFormat(string $format, string $datetime, ?DateTimeZone $timezone = null): DateTimeImmutable|false

public static createFromInterface(DateTimeInterface $object): DateTimeImmutable

public static createFromMutable(DateTime $object): DateTimeImmutable

public static getLastErrors(): array|false

public modify(string $modifier): DateTimeImmutable|false

public static __set_state(array $array): DateTimeImmutable

public setDate(int $year, int $month, int $day): DateTimeImmutable

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

public setTime(
    int $hour,
    int $minute,
    int $second = 0,
    int $microsecond = 0
): DateTimeImmutable

public setTimestamp(int $timestamp): DateTimeImmutable

public setTimezone(DateTimeZone $timezone): DateTimeImmutable

public sub(DateInterval $interval): DateTimeImmutable

public diff(DateTimeInterface $targetObject, bool $absolute = false): DateInterval

public format(string $format): string

public getOffset(): int

public getTimestamp(): int

public getTimezone(): DateTimeZone|false

public __wakeup(): void

}

DateTimeImmutable::add — Returns a new object, with added amount of days, months, years, hours, minutes and seconds
DateTimeImmutable::__construct — Returns new DateTimeImmutable object
DateTimeImmutable::createFromFormat — Parses a time string according to a specified format
DateTimeImmutable::createFromInterface — Returns new DateTimeImmutable object encapsulating the given DateTimeInterface object
DateTimeImmutable::createFromMutable — Returns new DateTimeImmutable object encapsulating the given DateTime object
DateTimeImmutable::getLastErrors — Returns the warnings and errors
DateTimeImmutable::modify — Creates a new object with modified timestamp
DateTimeImmutable::__set_state — The __set_state handler
DateTimeImmutable::setDate — Sets the date
DateTimeImmutable::setISODate — Sets the ISO date
DateTimeImmutable::setTime — Sets the time
DateTimeImmutable::setTimestamp — Sets the date and time based on a Unix timestamp
DateTimeImmutable::setTimezone — Sets the time zone
DateTimeImmutable::sub — Subtracts an amount of days, months, years, hours, minutes and seconds

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User Contributed Notes 3 notes

down

taoufik dot oussama at gmail dot com ¶

4 years ago


Here's a simple example on how this class works :

    // Create a DateTimeImmutable Object
    $date = new DateTimeImmutable('2000-01-01');
    // "Change" that object and assign it's value to a new variable
    $date2 = $date->add(new DateInterval('P6M5DT24H'));
    // Check out the content of the two variables
    echo $date->format('Y-m-d') . "\n";
    // 2000-01-01
    echo $date2->format('Y-m-d') . "\n";
    // 2000-07-07

down

katsarov at gmail dot com ¶

3 years ago


Note: If you are trying to get 02.29 for non leap year it will return 03.01
Example: 
<?php 
new DateTimeImmutable('2017-02-29') // 2017-03-01
?>

down

-25

soullinker0 googlemail ¶

3 years ago


class MyDateTime extends DateTimeImmutable
{
    public function addDay(int $amount): MyDateTime
    {
        return $this->add(new DateInterval("P" . $amount . "D"));
    }
}

addDay will return DateTimeImmutable not MyDateTime. It looks like there is no "return static;"
i wish i would be

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官方地址：https://www.php.net/manual/en/class.datetimeimmutable.php

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The DateTimeImmutable class

简介

类摘要

目录

User Contributed Notes 3 notes