Web студия "GrandView"

Описание

int timezone_offset_get ( DateTimeZone object, DateTime datetime )

int DateTimeZone::getOffset ( 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 DateTime object being used.

Список параметров

object: DateTimeZone object.
datetime: DateTime that contains the date/time to compute the offset from.

Примеры

Пример 1. timezone_offset_get() 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); ?>

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timezone_offset_get

richard at phase dot org
20-Mar-2007 04:05


The following extended example may make the usage clearer; 

<?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);



// NOTE: $dateTimeJapan is not used further in this example



// 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).

print("Number of seconds Japan is ahead of GMT at the specific time: ");

var_dump($timeOffset);



print("<br />Number of seconds Taipei is ahead of GMT at the specific time: ");

var_dump($dateTimeZoneTaipei->getOffset($dateTimeTaipei));



print("<br />Number of seconds Japan is ahead of Taipei at the specific time: ");

var_dump($dateTimeZoneJapan->getOffset($dateTimeTaipei)

     -$dateTimeZoneTaipei->getOffset($dateTimeTaipei));



print("<hr />");



?>



Number of seconds Japan is ahead of GMT at the specific time: int(32400)

Number of seconds Taipei is ahead of GMT at the specific time: int(28800)

Number of seconds Japan is ahead of Taipei at the specific time: int(3600)

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timezone_offset_get

Описание

Список параметров

Возвращаемые значения

Примеры