解决PHP date调用警告:It is not safe to rely on the system's timezone settings

本文介绍了如何解决PHP程序中出现的关于系统时区设置的安全警告。提供了两种解决方案:一是通过在PHP脚本顶部使用date_default_timezone_set()函数来设置默认时区;二是修改php.ini配置文件中的date.timezone值。

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It is not safe to rely on the system's timezone settings

在写php程序中有时会出现这样的警告: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 'UTC' for '8.0/no DST' instead in ...
这是因为PHP所取的时间是格林威治标准时间,所以和你当地的时间会有出入格林威治标准时间和北京时间大概差8个小时左右,
我们可以按照下面的方法解决:
1、在页头使用date_default_timezone_set()设置我的默认时区为北京时间,即<?phpdate_default_timezone_set("PRC");?>就可以了。
OR
2、在php.ini中设置date.timezone的值为PRC,设置好以后的为:date.timezone=PRC,同时取消这一行代码的注释,即去掉前面的分号就可以了。  

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