PHP date（）与时区？ [英] PHP date() with timezone?

问题描述

因此，我检查了 PHP支持的时区列表，我想知道如何将它们包含在 date（）函数中？
谢谢！

So I've checked the list of supported time zones in PHP and I was wondering how could I include them in the date() function? Thanks!

我不需要默认时区，每个用户的时区都存储在数据库中，我使用该用户的时区并使用它。怎么样？我知道如何从数据库中获取它，而不是如何使用它。

I don't want a default timezone, each user has their timezone stored in the database, I take that timezone of the user and use it. How? I know how to take it from the database, not how to use it, though.

推荐答案

对于这样的任务，您应该使用PHP的DateTime类。请忽略所有建议您使用date（）或date_set_time_zone的答案，这太糟糕了并且已经过时了。

For such task, you should really be using PHP's DateTime class. Please ignore all of the answers advising you to use date() or date_set_time_zone, it's simply bad and outdated.

我将使用伪代码进行演示，因此请尝试调整满足您需要的代码。

I'll use pseudocode to demonstrate, so try to adjust the code to suit your needs.

假设变量$ tz包含有效时区的字符串名称，变量$ timestamp包含您希望根据时区格式化的时间戳，代码如下：

Assuming that variable $tz contains string name of a valid time zone and variable $timestamp contains the timestamp you wish to format according to time zone, the code would look like this:

$tz = 'Europe/London';
$timestamp = time();
$dt = new DateTime("now", new DateTimeZone($tz)); //first argument "must" be a string
$dt->setTimestamp($timestamp); //adjust the object to correct timestamp
echo $dt->format('d.m.Y, H:i:s');

DateTime类功能强大，并掌握其所有功能-您应该花一些时间阅读关于它在php.net。要完全回答您的问题-是的，您可以动态调整时区参数（在从db读取数据的每次迭代中，您可以创建一个新的DateTimeZone（）对象）。

DateTime class is powerful, and to grasp all of its capabilities - you should devote some of your time reading about it at php.net. To answer your question fully - yes, you can adjust the time zone parameter dynamically (on each iteration while reading from db, you can create a new DateTimeZone() object).

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