PHP 8.1.0 Released!

The DateTimeZone class

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

Introduction

Representation of time zone.

Class synopsis

class DateTimeZone {
/* Constants */
const int AFRICA = 1;
const int AMERICA = 2;
const int ANTARCTICA = 4;
const int ARCTIC = 8;
const int ASIA = 16;
const int ATLANTIC = 32;
const int AUSTRALIA = 64;
const int EUROPE = 128;
const int INDIAN = 256;
const int PACIFIC = 512;
const int UTC = 1024;
const int ALL = 2047;
const int ALL_WITH_BC = 4095;
const int PER_COUNTRY = 4096;
/* Methods */
public __construct(string $timezone)
public getLocation(): array|false
public getName(): string
public getOffset(DateTimeInterface $datetime): int
public getTransitions(int $timestampBegin = PHP_INT_MIN, int $timestampEnd = PHP_INT_MAX): array|false
public static listAbbreviations(): array
public static listIdentifiers(int $timezoneGroup = DateTimeZone::ALL, ?string $countryCode = null): array
}

Predefined Constants

DateTimeZone::AFRICA

Africa time zones.

DateTimeZone::AMERICA

America time zones.

DateTimeZone::ANTARCTICA

Antarctica time zones.

DateTimeZone::ARCTIC

Arctic time zones.

DateTimeZone::ASIA

Asia time zones.

DateTimeZone::ATLANTIC

Atlantic time zones.

DateTimeZone::AUSTRALIA

Australia time zones.

DateTimeZone::EUROPE

Europe time zones.

DateTimeZone::INDIAN

Indian time zones.

DateTimeZone::PACIFIC

Pacific time zones.

DateTimeZone::UTC

UTC time zones.

DateTimeZone::ALL

All time zones.

DateTimeZone::ALL_WITH_BC

All time zones including backwards compatible.

DateTimeZone::PER_COUNTRY

Time zones per country.

Table of Contents

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User Contributed Notes 2 notes

up
10
bradm at inmotionhosting dot com
3 years ago
Seems like a significant differences between php 5.3 and 5.6:

php -r "new DateTimeZone( '-0400' );"
-------------                        --------------
- PHP 5.3.3 -                        - PHP 5.6.30 -
-------------                        --------------
DateTimeZone::__construct():        Works as expected.
Unknown or bad timezone (-0400)

php -r '$tz = new DateTimeZone( "EDT" ); echo $tz->getName();';
-------------                        --------------
- PHP 5.3.3 -                        - PHP 5.6.30 -
-------------                        --------------
America/New_York                    EDT

php -r '$tz = new DateTimeZone( "EDT" ); echo $tz->getName();';
-------------                        --------------
- PHP 5.3.3 -                        - PHP 5.6.30 -
-------------                        --------------
DateTimeZone Object                DateTimeZone Object
(                                    (
)                                    [timezone_type] => 2
                                    [timezone] => EDT
                                    )
up
-38
ryan at amst dot com
6 years ago
It seems like as of PHP 5.5, creating a new DateTimeZone with a string like 'EDT' will cause DateTimeZone::getName() to return 'EDT' whereas prior to 5.5 it would convert it would have returned 'America/New_York'

This is of particular note when using a DateTimeZone object to change the timezone on a DateTime object.  Using a DateTimeZone object when set as shown above will cause the conversion to be wrong without throwing any errors.
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