PHP 8.2.0 Alpha 2 available for testing

DateTimeImmutable::__construct

date_create_immutable

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

DateTimeImmutable::__construct -- date_create_immutableReturns new DateTimeImmutable object

Beschreibung

Objektorientierter Stil

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

Prozeduraler Stil

date_create_immutable(string $datetime = "now", ?DateTimeZone $timezone = null): DateTimeImmutable|false

Returns new a DateTimeImmutable object.

Parameter-Liste

datetime

Ein Datums/Zeit Zeichenkette. Gültige Formate werden unter Datums- und Zeitformate erläutert.

Enter "now" here to obtain the current time when using the $timezone parameter.

timezone

A DateTimeZone object representing the timezone of $datetime.

If $timezone is omitted or null, the current timezone will be used.

Hinweis:

The $timezone parameter and the current timezone are ignored when the $datetime parameter either is a UNIX timestamp (e.g. @946684800) or specifies a timezone (e.g. 2010-01-28T15:00:00+02:00).

Rückgabewerte

Returns a new DateTimeImmutable instance. Prozeduraler Stil Im Fehlerfall wird false zurückgegeben.

Fehler/Exceptions

Emits Exception in case of an error.

Changelog

Version Beschreibung
7.1.0 From now on microseconds are filled with actual value. Not with '00000'.

Beispiele

Beispiel #1 DateTimeImmutable::__construct() example

Objektorientierter Stil

<?php
try {
    
$date = new DateTimeImmutable('2000-01-01');
} catch (
Exception $e) {
    echo 
$e->getMessage();
    exit(
1);
}

echo 
$date->format('Y-m-d');
?>

Prozeduraler Stil

<?php
$date 
date_create('2000-01-01');
if (!
$date) {
    
$e date_get_last_errors();
    foreach (
$e['errors'] as $error) {
        echo 
"$error\n";
    }
    exit(
1);
}

echo 
date_format($date'Y-m-d');
?>

Die obigen Bespiele erzeugen folgende Ausgabe:

2000-01-01

Beispiel #2 Intricacies of DateTimeImmutable::__construct()

<?php
// Specified date/time in your computer's time zone.
$date = new DateTimeImmutable('2000-01-01');
echo 
$date->format('Y-m-d H:i:sP') . "\n";

// Specified date/time in the specified time zone.
$date = new DateTimeImmutable('2000-01-01', new DateTimeImmutableZone('Pacific/Nauru'));
echo 
$date->format('Y-m-d H:i:sP') . "\n";

// Current date/time in your computer's time zone.
$date = new DateTimeImmutable();
echo 
$date->format('Y-m-d H:i:sP') . "\n";

// Current date/time in the specified time zone.
$date = new DateTimeImmutable(null, new DateTimeZone('Pacific/Nauru'));
echo 
$date->format('Y-m-d H:i:sP') . "\n";

// Using a UNIX timestamp.  Notice the result is in the UTC time zone.
$date = new DateTimeImmutable('@946684800');
echo 
$date->format('Y-m-d H:i:sP') . "\n";

// Non-existent values roll over.
$date = new DateTimeImmutable('2000-02-30');
echo 
$date->format('Y-m-d H:i:sP') . "\n";
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

2000-01-01 00:00:00-05:00
2000-01-01 00:00:00+12:00
2010-04-24 10:24:16-04:00
2010-04-25 02:24:16+12:00
2000-01-01 00:00:00+00:00
2000-03-01 00:00:00-05:00
add a note add a note

User Contributed Notes 1 note

up
2
wangbuying at gmail dot com
2 years ago
As the type of the first parameter is string, we can assign a relative date for it.
Example:

<?php
$immutable
= new DateTimeImmutable('-1 year', new DateTimeZone('Asia/ShangHai'));
echo
$immutable->format('Y-m-d H:i:s');
?>

It looks like the parameter of function strtotime and is very helpful for us to get an immutable relative DateTime object.
To Top