PHP Warning: Unknown: It is not safe to rely on the system‘s timezone settings
解决：
2.找到date.timezone，修改为 date.timezone = RPC，后保存。
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone =
修改为
[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = PRC
PHP Warning: Unknown: It is not safe to rely on the system's timezone settings
原文：http://ignatius.blog.51cto.com/10028892/1833049