如何使用 DateTime 类在 PHP 中的时区之间进行转换?

问题描述

我正在尝试将当前时间转换为 UTC 和 UTC 转换为当前时区.

I am trying to convert time between current time to UTC and UTC to current time zone.

这是我所做的:

$schedule_date = new DateTime($triggerOn, new DateTimeZone('UTC') );
$triggerOn =  $schedule_date->format('Y-m-d H:i:s');

echo $triggerOn;

输出值不会改变，唯一改变的是格式.

The output value does not change the only thing that changes in format.

字符串 $triggerOn 是根据 America/Los_Angeles 时区生成的

the string $triggerOn was generated based on America/Los_Angeles timezone

这是我的字符串前后的样子:

This is how my string looks like before and after:

BEFORE    04/01/2013 03:08 PM
AFTER     2013-04-01 15:08:00

所以这里的问题是 DateTime 没有转换为 UTC.

So the issue here is that DateTime does not convert to UTC.

推荐答案

你要找的是这个:

$triggerOn = '04/01/2013 03:08 PM';
$user_tz = 'America/Los_Angeles';

echo $triggerOn; // echoes 04/01/2013 03:08 PM

$schedule_date = new DateTime($triggerOn, new DateTimeZone($user_tz) );
$schedule_date->setTimeZone(new DateTimeZone('UTC'));
$triggerOn =  $schedule_date->format('Y-m-d H:i:s');

echo $triggerOn; // echoes 2013-04-01 22:08:00

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