php教程

DateTime::getOffset

DateTimeImmutable::getOffset

DateTimeInterface::getOffset

date_offset_get

(PHP 5 >= 5.2.1, PHP 7)

DateTime::getOffset -- DateTimeImmutable::getOffset -- DateTimeInterface::getOffset -- date_offset_getReturns the timezone offset

说明

面向对象风格

public DateTime::getOffset ( void ) : int
public DateTimeImmutable::getOffset ( void ) : int
public DateTimeInterface::getOffset ( void ) : int

过程化风格

Returns the timezone offset.

参数

object

仅为过程化风格:由 date_create() 返回的 DateTime 类型的对象。

返回值

Returns the timezone offset in seconds from UTC on success 或者在失败时返回 FALSE.

范例

Example #1 DateTime::getOffset() example

面向对象风格

<?php
$winter 
= new DateTime('2010-12-21', new DateTimeZone('America/New_York'));
$summer = new DateTime('2008-06-21', new DateTimeZone('America/New_York'));

echo 
$winter->getOffset() . "\n";
echo 
$summer->getOffset() . "\n";
?>

过程化风格

<?php
$winter 
date_create('2010-12-21'timezone_open('America/New_York'));
$summer date_create('2008-06-21'timezone_open('America/New_York'));

echo 
date_offset_get($winter) . "\n";
echo 
date_offset_get($summer) . "\n";
?>

以上例程会输出:

-18000
-14400

Note: -18000 = -5 hours, -14400 = -4 hours.

User Contributed Notes

s7sunder at gmail dot com 09-Jan-2014 10:47
This will be useful for converting offset values into GMT format

<?php

 
//target time zone
 
$target_time_zone = new DateTimeZone('America/Los_Angeles');

 
//find kolkata time
 
$kolkata_date_time = new DateTime('now', $target_time_zone);
 
 
//get the exact GMT format
 
echo 'GMT '.$kolkata_date_time->format('P');

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