DateTimeZone::getOffset

(PHP 5 >= 5.2.0, PHP 7)

Returns the timezone offset from GMT

public int DateTimeZone::getOffset ( DateTime $datetime )

Object oriented style

Procedural style

int timezone_offset_get ( DateTimeZone $object , DateTime $datetime )

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.

Parameters:

object

Procedural style only: A DateTimeZone object returned by timezone_open()

datetime

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

Returns:

Returns time zone offset in seconds on success or FALSE on failure.

Examples:

DateTimeZone::getOffset() examples

<?php
// 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).
var_dump($timeOffset);
?>

Links:

http://php.net/manual/en/datetimezone.getoffset.php

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2025-01-10 15:47:30

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