查看源码

==Questions About Error Files==
; Why not just hard code the path all the way to the 404.php file?: By allowing index.php to call the error file, you ensure that the 404.php file used will change automatically as you change your theme.

; What happens if I switch to a theme that does not have a 404.php file?: Visitors clicking on a broken link will just see a copy of the home page of your WordPress site (ttindex.php/tt), but the URL they see will be the URL of the broken link. That can confuse them, especially since there is no acknowledgement of the error. But this  is still better than a getting a NOT FOUND message without any links or information that could help them find what they seek.