PHP Warning: date(): It is not safe to rely on the system
昨天碰到使用date()函数时出现PHP Warning: date(): It is not safe to rely on the system出现这种错误是因为php5默认date.timezone为utc，改为date.timezone = PRC即可.下面看我的方法总结。
在php程序中运行时报如下警告信息：
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
主要是时区没有设置的缘故，调整很简单，打开php.ini文件，并找到date.timezone这行，改成如下：date.timezone = Asia/Shanghai,然后重启apache即可！
在php程序中解决,在你程序前加上如下代码:
date_default_timezone_set('asia/shanghai');或者
ini_set('date.timezone','asiashanghai');