问题
I must do a little trick for a site! The idea is:
- if a file for a required url exists then I go to that url, doing nothing more;
- if a file for a required url not exists, I must go to a file.php and than do something, but NOT changing the url!
example:
www.mysite.com/page1.htm -> exists -> go to file page1.htm
www.mysite.com/page2.htm -> NOT exists -> go to file default.php but with url "www.mysite.com/page2.htm"
It's possible to do this all by .htaccess?
回答1:
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^.*$ /default.php [L]
回答2:
It is not mentioned here but FallbackResource is the new recommended way of handling not-found (404) URLs. Example:
FallbackResource /not-404.php
From Apache manual:
Use this to set a handler for any URL that doesn't map to anything in your filesystem, and would otherwise return HTTP 404 (Not Found).
回答3:
Implement a 404 error rule. Doesn't require mod_rewrite:
ErrorDocument 404 /default.php
来源：https://stackoverflow.com/questions/5469955/htaccess-url-rewrite-if-file-not-exists