date():依赖系统的时区设置是不安全的…

当我请求在服务器上将PHP版本从5.2.17更新到PHP 5.3.21时，我得到了这个错误。

<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead</p>
<p>Filename: libraries/Log.php</p>
<p>Line Number: 86</p>

</div>
Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead in /filelocation right here/system/libraries/Log.php on line 86

Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead in /filelocation right here/system/libraries/Log.php on line 99
<div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">

<h4>A PHP Error was encountered</h4>

<p>Severity: Warning</p>
<p>Message:  date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EDT/-4.0/DST' instead</p>
<p>Filename: libraries/Log.php</p>
<p>Line Number: 99</p>

</div>

当前回答

@Justis给我指出了正确的方向，但他的代码对我不起作用。这是:

// set the default timezone if not set at php.ini
if (!date_default_timezone_get('date.timezone')) {
    // insert here the default timezone
    date_default_timezone_set('America/New_York');
}

文档:http://www.php.net/manual/en/function.date-default-timezone-get.php

此解决方案不仅适用于那些没有完全系统访问权限的人。当您将脚本提供给除您之外的任何人时，它对于任何脚本都是必要的。当您将脚本分发给其他人时，您永远不知道该脚本将在哪个服务器上运行。

2014-07-02 07:10:05

其他回答

您可能需要将时区放在php.ini文件的配置行中。你应该在你的php.ini文件中有一个这样的块:

[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = America/New_York

如果没有，添加它(用您的时区替换)。配置完成后，确保重新启动httpd (service httpd restart)。

下面是支持的时区列表。

2013-05-27 01:14:23

如果你不能修改你的php.ini配置，你也可以在你的代码开头使用下面的代码片段:

date_default_timezone_set('Africa/Lagos');//or change to whatever timezone you want

时区列表可以在http://www.php.net/manual/en/timezones.php上找到。

2013-08-04 22:54:15

我必须把它放在双引号里。

date_default_timezone_set("America/Los_Angeles"); // default time zone

2014-07-22 10:09:12

你可以在你的.htaccess文件中设置时区

php_value date.timezone UTC

2018-01-18 21:41:20

如果你使用Plesk，试试它，首先，打开PHP设置，在页面底部，更改日期。从DEFAULT到UTC的时区。

2016-12-18 18:58:38

date():依赖系统的时区设置是不安全的…

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