PHP Warning: date(): It is not safe to rely on the system’s timezone settings

本文介绍了如何解决PHP中'It is not safe to rely on the system’s time zone settings'的问题。提供了三种解决方案:使用date_default_timezone_set(), ini_set()或修改php.ini文件。

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解决php的“It is not safe to rely on the system’s timezone settings”问题


通过观察nginx的错误日志,发现大量的如下错误:

PHP 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 ‘Asia/Chongqing’ for ‘CST/8.0/no DST’ instead in

通过搜索,发现从php5.3 ,当对使用date()等函数时,如果timezone设置不正确,在每一次调用时间函数时,都会产生E_NOTICE 或者 E_WARNING 信息。知道了问题的根源,解决的方法有三种,任选一种即可。

一、在页头使用date_default_timezone_set()设置 date_default_timezone_set(‘PRC’);
二、在页头使用ini_set(‘date.timezone’,'Asia/Shanghai’);
三、修改php.ini。打开php5.ini查找date.timezone 去掉前面的分号修改成为:date.timezone =PRC

注意:上述设置都是针对中国大陆来设置的,同时PRC也可以用Asia/Shanghai,Asia/Chongqing,Asia/Urumqi来代替。

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这篇文章主要介绍了解决php的“It is not safe to rely on the system’s timezone settings”问题的方法,需要的朋友可以参考下

如果使用PHP5.3以上版本时,如果没有正确的配置php.ini就会出现PHP日期函数的错误。以前很多旧的PHP编程教程没有说到这个问题,所以不少读者会觉得困惑,下面笔者为大家讲述解决这个问题的三种方法。
"PHP Warning:
date() [function.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 'UTC' for '8.0/no DST' instead in"

实际上,从PHP 5.1.0,当对使用date() 等函数时,如果 timezone 设置不正确,在每一次调用时间函数时,都会产生 E_NOTICE 或者 E_WARNING 信息。而又在 PHP 5.1.0 中,date.timezone 这个选项,默认情况下是关闭的,无论用什么PHP 命令都是格林威治标准时间,但是PHP 5.3 中好像如果没有设置也会强行抛出了这个错误的,解决此问题,只要本地化一下就行了。

一、在页头使用date_default_timezone_set()设置 date_default_timezone_set('PRC'); //东八时区 echo
date('Y-m-d H:i:s');

二、在页头使用 ini_set('date.timezone','Asia/Shanghai');

三、修改 php.ini(如果是 windows 系统,那么文件在 C 盘,Windows 目录下,假如系统是安装在 C 盘)。使用记事本打开 php.ini 查找 date.timezone 去掉前面的分号修改成为:date.timezone = PRC
重启http服务(如apache2或iis等)即可!

以上三种方法任选其中一种即可,小编推荐使用第三种方法,不用每次都要增加额外的代码。


转自 http://www.jb51.net/article/73059.htm

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