PHP提示这样的警告：
Warning: date() [function.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 getting this warning, you most likely misspelled the timezone identifier. We selected ‘UTC’ for ’8.0/no DST’ instead in D:\htdocs\index.php on line 5
解决：这是因为时区的问题，在php.ini找到date.timezone，修改为date.timezone = PRC，并将前面的分号注释去掉，重启Apache即可。