如题，通过查看php编译参数php -i | grep configure发现如下错误：

PHP Warning: Unknown: 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 'Asia/Chongqing' for 'CST/8.0/no DST' instead in Unknown on line 0

解决办法：

编辑php.ini

找到date.timezone =，将前面的注释去掉，改为date.timezone = Asia/Shanghai意思是中国时区，然后重载apache即可

# service httpd reload