timezone_offset_get -- Returns the timezone offset from GMT
Description
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.
Parameters
object
DateTimeZone object.
datetime
DateTime that contains the date/time to compute the offset from.
Return Values
Returns time zone offset in seconds on success or FALSE on failure.
Examples
Example 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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