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

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 D:\WebSites\***.php on line 233

Solution:

php.ini

date.timezone ="Asia/Shanghai"

http://wupeng.cn/post/2009/09/03/It-is-not-safe-to-rely-on-the-systems-timezone-settings.aspx