(PHP 5 >= 5.2.0, PHP 7, PHP 8)

DateTimeZone::__construct -- timezone_openCreates new DateTimeZone object


Stile orientato agli oggetti

public DateTimeZone::__construct(string $timezone)

Stile procedurale

timezone_open(string $timezone): DateTimeZone|false

Creates a new DateTimeZone object.

A DateTimeZone object provides access to three different types of timezone rules: UTC offset (type 1), timezone abbreviation (type 2), and timezone identifiers as published in the IANA timezone database (type 3).

The DateTimeZone object can be attached to DateTime and DateTimeImmutable objects to be able to render the timezone encapsulated by these objects in a local timezone.

Elenco dei parametri


One of the supported timezone names, an offset value (+0200), or a timezone abbreviation (BST).

Valori restituiti

Returns DateTimeZone on success. Stile procedurale restituisce false in caso di fallimento.


This method throws Exception if the timezone supplied is not recognised as a valid timezone.


Example #1 Creating and attaching DateTimeZone to a DateTimeImmutable

= new DateTimeImmutable("2022-06-02 15:44:48 UTC");

$timezones = [ 'Europe/London''GMT+04:45''-06:00''CEST' ];

foreach (
$timezones as $tz) {
$tzo = new DateTimeZone($tz);

$local $d->setTimezone($tzo);
$local->format(DateTimeInterface::RFC2822 ' — e'), "\n";

Il precedente esempio visualizzerà:

Thu, 02 Jun 2022 16:44:48 +0100 — Europe/London
Thu, 02 Jun 2022 20:29:48 +0445 — +04:45
Thu, 02 Jun 2022 09:44:48 -0600 — -06:00
Thu, 02 Jun 2022 17:44:48 +0200 — CEST

Example #2 Catching errors when instantiating DateTimeZone

// Error handling by catching exceptions
$timezones = array('Europe/London''Mars/Phobos''Jupiter/Europa');

foreach (
$timezones as $tz) {
    try {
$mars = new DateTimeZone($tz);
    } catch(
Exception $e) {
$e->getMessage() . '<br />';

Il precedente esempio visualizzerà:

DateTimeZone::__construct() [datetimezone.--construct]: Unknown or bad timezone (Mars/Phobos)
DateTimeZone::__construct() [datetimezone.--construct]: Unknown or bad timezone (Jupiter/Europa)

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