PHP date()函数警告: It is not safe to rely on the system解决方法

近来总是有系统邮件提示，开始没在意，后来不断提示就看了一下。提示以下信息 复制代码 代码如下: 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 gett ing this warni