DateTime::getOffset

DateTimeImmutable::getOffset

DateTimeInterface::getOffset

date_offset_get

(PHP 5 >= 5.2.0, PHP 7)

DateTime::getOffset -- DateTimeImmutable::getOffset -- DateTimeInterface::getOffset -- date_offset_get — Returns the timezone offset

说明

面向对象风格

public int DateTime::getOffset ( void )

public int DateTimeImmutable::getOffset ( void )

public int DateTimeInterface::getOffset ( void )

过程化风格

int date_offset_get ( DateTimeInterface $object )

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.

用户评论:

[#1] s7sunder at gmail dot com [2014-01-09 10:47:16]

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');