转换为UTC而不更改php时区设置 [英] convert to UTC without changing php timezone settings

问题描述

如何在不更改默认时区的情况下在php中转换日期字符串的时区.我想将其本地转换为仅显示.不应更改php时区设置.

How can I convert the time zone of a date string in php without changing the default time zone. I want to convert it locally to display only. The php time zone settting should not be modified.

我的源时间是UTC字符串，我想将其转换为其他格式，将时区保留为UTC，但是php将其转换为本地时区. 我使用的代码是:

My source time is a UTC string, I want to convert it to a different format, retaining the time zone as UTC, but php is converting it to local timezone. The code I used was:

date('Y-m-d H:i::s',strtotime($time_str));

如何保留时区?

推荐答案

$src_tz = new DateTimeZone('America/Chicago');
$dest_tz = new DateTimeZone('America/New_York');

$dt = new DateTime("2000-01-01 12:00:00", $src_tz);
$dt->setTimeZone($dest_tz);

echo $dt->format('Y-m-d H:i:s');

请注意，如果源时间是UTC，则可以将一行更改为此:

Note that if the source time is UTC, you can change the one line to this:

$dt = new DateTime("2000-01-01 12:00:00 UTC");

您似乎想去 UTC.在这种情况下，只需将"UTC"用作$dest_tz构造函数的参数，并使用原始代码块. (当然，如果$src_tz参数与默认时区相同，则可以省略.)

Looks like you want to go to UTC. In that case, just use "UTC" as the parameter to the $dest_tz constructor, and use the original block of code. (And of course, you can omit the $src_tz parameter if it is the same as the default time zone.)

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