php 5.3访问Yii框架自带的例子系统时页面打印500错误

php 5.3访问Yii框架自带的例子系统时页面打印500错误2013-11-19访问Yii框架自带的例子系统时，页面打印500错误：

Error 500

date（） [<a href="function.date">function.date</a>]: 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

经查和试验解决方案为：

在php.ini中设置时区：

date.timezone = "Asia/Shanghai"

或者在网页开头中加入：

<？php

date_default_timezone_set（"PRC"）;

？>