International PHP Conference Berlin 2021



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

DateTimeZone::getOffset -- timezone_offset_getReturns the timezone offset from GMT


Nesne yönelimli kullanım

public DateTimeZone::getOffset ( DateTimeInterface $datetime ) : int

Yordamsal kullanım

timezone_offset_get ( DateTimeZone $object , DateTimeInterface $datetime ) : int

This function returns the offset to GMT for the date/time specified in the datetime parameter. The GMT offset is calculated with the timezone information contained in the DateTimeZone object being used.



Sadece yordamsal biçem: timezone_open() işlevinden dönen bir DateTimeZone nesnesi.


DateTime that contains the date/time to compute the offset from.

Dönen Değerler

Returns time zone offset in seconds.

Sürüm Bilgisi

Sürüm: Açıklama
8.0.0 Prior to this version, false was returned on failure.
5.5.19, 5.6.3 datetime type changed to DateTimeInterface. Previously, DateTime.


Örnek 1 DateTimeZone::getOffset() examples

// Create two timezone objects, one for Taipei (Taiwan) and one for
// Tokyo (Japan)
$dateTimeZoneTaipei = new DateTimeZone("Asia/Taipei");
$dateTimeZoneJapan = new DateTimeZone("Asia/Tokyo");

// Create two DateTime objects that will contain the same Unix timestamp, but
// have different timezones attached to them.
$dateTimeTaipei = new DateTime("now"$dateTimeZoneTaipei);
$dateTimeJapan = new DateTime("now"$dateTimeZoneJapan);

// Calculate the GMT offset for the date/time contained in the $dateTimeTaipei
// object, but using the timezone rules as defined for Tokyo
// ($dateTimeZoneJapan).
$timeOffset $dateTimeZoneJapan->getOffset($dateTimeTaipei);

// Should show int(32400) (for dates after Sat Sep 8 01:00:00 1951 JST).

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User Contributed Notes 1 note

Fred Gandt
6 years ago
Procedural Style:

// Don't know where the server is or how its clock is set, so default to UTC
date_default_timezone_set( "UTC" );

// The client is in England where daylight savings may be in effect
$daylight_savings_offset_in_seconds = timezone_offset_get( timezone_open( "BST" ), new DateTime() );

// Do something useful with the number
echo date( "U" ) + $daylight_savings_offset_in_seconds;
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