php5.3.0 timezone settings question

PHP Warning:  PHP Startup: 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 ‘***/***’ for ‘CST/8.0/no DST’ instead in Unknown on line 0

date() [function.date]: It is not safe to rely on the system’s timezone settings. Please use the date.timezone setting, the TZ environment variable 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 ‘***/***’ for ‘PST/-8.0/no DST’ instead

    在 PHP 日志中或使用 data函数时，可能出现类似以上内容的错误。可以通过2个办法解决：

    1、在程序的开头设置默认时间区。

date_default_timezone_set(”Asia/Shanghai”);

     2、修改 php.ini 文件，Data 章节中的 date.timezone 选项。

[Date]
; Defines the default timezone used by the date functions
;
date.timezone = Asia/Shanghai

     
      以上 timezone 时间区的值可以在中找到。