DateTimeImmutable::__construct

date_create_immutable

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

DateTimeImmutable::__construct -- date_create_immutable — Returns new DateTimeImmutable object

Descrizione

Stile orientato agli oggetti

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

Stile procedurale

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

Returns new a DateTimeImmutable object.

Elenco dei parametri

datetime

Una stringa data/ora. I formati validi sono descritti in Formati di Data e Tempo.

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.

Nota:
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, or 2010-07-05T06:00:00Z).

Valori restituiti

Returns a new DateTimeImmutable instance.

Errori/Eccezioni

If an invalid Date/Time string is passed, DateMalformedStringException is thrown. Previous to PHP 8.3, this was Exception.

Log delle modifiche

Versione	Descrizione
8.3.0	Now throws DateMalformedStringException if an invalid string is passed, instead of Exception.
7.1.0	From now on microseconds are filled with actual value. Not with '00000'.

Esempi

Example #1 DateTimeImmutable::__construct() example

Stile orientato agli oggetti

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

echo $date->format('Y-m-d');
?>

Stile procedurale

<?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');
?>

I precedenti esempi visualizzeranno:

2000-01-01

Example #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 DateTimeZone('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('now', 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";
?>

Il precedente esempio visualizzerà qualcosa simile a:

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

Example #3 Changing the associated timezone

<?php
$timeZone = new \DateTimeZone('Asia/Tokyo');

$time = new \DateTimeImmutable();
$time = $time->setTimezone($timeZone);

echo $time->format('Y/m/d H:i:s'), "\n";
?>

Il precedente esempio visualizzerà qualcosa simile a:

2022/08/12 23:49:23

Example #4 Using a relative date/time string

<?php
$time = new \DateTimeImmutable("-1 year");

echo $time->format('Y/m/d H:i:s'), "\n";
?>

Il precedente esempio visualizzerà qualcosa simile a:

2021/08/12 15:43:51

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User Contributed Notes 1 note

down

Dmitrii ¶

1 year ago

"If $timezone is omitted or null, the current timezone will be used." - note, that timezone IS NOT equal offset, if its important for your application.

If default timezone = Europe/Moscow, then:
echo (new \DateTimeImmutable('2014-10'))->format(DATE_ATOM); // gives "2014-10-01T00:00:00+04:00"
echo (new \DateTimeImmutable('2014-11'))->format(DATE_ATOM); // gives "2014-11-01T00:00:00+03:00"
because of law changes (abolition of "summer time").

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