FATAL ERROR_ Code_ 64;Desc_ Namespace declaration statement has to be the very first statement in the script;

FATAL ERROR: Code: 64;Desc: Namespace declaration statement has to be the very first statement in the script;

问题原因：网站核心文件里有bom了吧，被干预到了

解决办法：改回utf-8 无bom格式就好了