PHP Manual: Creates new DateTimeZone object

Description

Object-oriented style

public DateTimeZone::__construct(string $timezone)

Procedural style

DateTimeZonefalse timezone_open(string $timezone)

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.

Parameters

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

Return Values

Returns DateTimeZone on success. Procedural style returns false on failure.

Errors/Exceptions

This method throws DateInvalidTimeZoneException if the timezone supplied is not recognised as a valid timezone. Prior to PHP 8.3, this was an Exception instead.

Changelog

Version	Description
8.3.0	Invalid values now return a DateInvalidTimeZoneException instead of a generic Exception.

Examples

Example #1 Creating and attaching DateTimeZone to a DateTimeImmutable

<?php
$d = 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);
    echo $local->format(DateTimeInterface::RFC2822 . ' — e'), "\n";
}
?>

The above example will output:

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

<?php
// 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) {
        echo $e->getMessage() . '<br />';
    }
}
?>

The above example will output:

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