在 php 中获取服务器时间 - 时区问题

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时间:2020-08-25 10:21:03  来源:igfitidea点击:

get server time in php - timezone issues

phptimezone

提问by azv

on shell, my server time is (simple datein bash): Sun Aug 29 10:37:12 EDT 2010

在 shell 上,我的服务器时间是(date在 bash 中很简单):Sun Aug 29 10:37:12 EDT 2010

when I run the code php -r "echo date('Y-m-d H:i:s');"I get: 2010-08-29 10:37:10

当我运行代码时,php -r "echo date('Y-m-d H:i:s');"我得到:2010-08-29 10:37:10

but when I execute a php script that has echo date('Y-m-d H:i:s');I get a different time- since php thinks the timezone is UTC (server time is EDT).

但是当我执行一个 php 脚本时,echo date('Y-m-d H:i:s');我得到了一个不同的时间 - 因为 php 认为时区是 UTC(服务器时间是 EDT)。

My php.ini file has no timezone set, and I wouldnt like to change anything- as I have no idea what affect it would have on other sites that run on this server.

我的 php.ini 文件没有设置时区,我不想更改任何内容 - 因为我不知道它会对在此服务器上运行的其他站点产生什么影响。

Is there a simple way to get the server time- at the timezone that is set for the server?

有没有一种简单的方法可以在为服务器设置的时区获取服务器时间?

采纳答案by Daniel Vandersluis

According to the php.ini directivesmanual page, the timezone isn't set by default if you're using a version prior to 5.3. Then if you take a look at the page for date_default_timezone_get, it uses the following order for getting the timezone:

根据php.ini 指令手册页,如果您使用的是 5.3 之前的版本,则默认情况下不会设置时区。然后,如果您查看 页面date_default_timezone_get,它会使用以下顺序获取时区:

* Reading the timezone set using the date_default_timezone_set() function (if any)
* Reading the TZ environment variable (if non empty) (Prior to PHP 5.3.0)
* Reading the value of the date.timezone ini option (if set)
* Querying the host operating system (if supported and allowed by the OS)

UTC is the default if all of those fail, so that's probably a good starting point.

如果所有这些都失败,UTC 是默认值,所以这可能是一个很好的起点。

回答by Artefacto

The server should alwayshave a timezone specified in the php.inifile. PHP 5.3 even raises notices if that's not the case and the DateTimeextension will throw exceptions if you attempt to build objects without explicitly specifying a timezone (with a DateTimezoneobject) or having a default one (either through date.timezoneor date_default_timezone_set).

服务器应始终php.ini文件中指定时区。如果情况并非如此,PHP 5.3 甚至会发出通知,并且DateTime如果您尝试构建对象而未明确指定时区(使用DateTimezone对象)或具有默认时区(通过date.timezonedate_default_timezone_set),扩展将抛出异常。

By what you're describing, the most likely scenarios are:

根据您的描述,最可能的情况是:

  • Different php.ini files are being used in the two scenarios. In the first case, no default timezone is specified, so PHP attempts to infer one from the system-wide timezone of the machine.
  • The (second) script calls date_default_timezone_set('UTC')or equivalent.
  • 这两种情况使用了不同的 php.ini 文件。在第一种情况下,没有指定默认时区,因此 PHP 尝试从机器的系统范围时区推断一个。
  • (第二个)脚本调用date_default_timezone_set('UTC')或等效项。

回答by pascalbrax

Late for the party, but if you want to set the timezone without edit php.ini, you can put in the php code one of these strings:

聚会迟到了,但如果你想在不编辑 php.ini 的情况下设置时区,你可以在 php 代码中输入以下字符串之一:

date_default_timezone_set('GMT');
date_default_timezone_set('Europe/Zurich');
date_default_timezone_set('America/New_York');

回答by Shaun Hare

Have you tried using date_default_timezone_set() American timezones can be found here http://www.php.net/manual/en/timezones.america.php

您是否尝试过使用 date_default_timezone_set() 可以在此处找到美国时区http://www.php.net/manual/en/timezones.america.php