Warning: date(): It is not safe to rely on the system's timezone settings.

Warning: date(): It is not safe to rely on the system's timezone settings. 跟着视频做，怎么会出现这样的错误； 添加下面这个设置时区后， date_default_timezone_set('PRC'); //设置中国时区 Parse error: syntax error, unexpected 'date_default_timezone_set' (T_STRING)