mod_rewrite友好URL与404冲突

Question

I've been struggling with my mod_rewrite for a while now and I thought I'd cracked it…

My CMS generates blog post URLs with post.php?s= and I've been trying to remove this part of the URL so that they're nice and user friendly. Here's my mod_rewrite:

<ifModule mod_rewrite.c>

DirectoryIndex index.php index.html

ErrorDocument 404 http://tempertemper.net/error.php

RewriteEngine On

RewriteCond %{ENV:REDIRECT_STATUS} 200
RewriteRule ^ - [L]

RewriteCond %{HTTP_HOST} ^www.tempertemper\.net$
RewriteCond %{REQUEST_URI} !cron.php
RewriteRule ^(.*)$ http://tempertemper.net/$1 [R=301,L]

RewriteCond %{QUERY_STRING} ^s=(.+)$
RewriteRule post.php /%1? [R=301,L]

RewriteRule ^resources /archive? [R=301,L]

RewriteCond %{REQUEST_URI} !post.php
RewriteRule ^([a-zA-Z0-9_-]+)$ post.php?s=$1

</ifModule>

Unfortunately, It seems to be directing all pages that aren't found to the blank post.php page instead of the error.php page.

My site is here: http://tempertemper.net and here's a URL that doesn't exist http://tempertemper.net/this-url-does-not-exist

It should take you to http://tempertemper.net/error

Thanks for taking a look :)

Answer 1

Because you are redirecting all paths which fit the [a-zA-Z0-9_-]+ pattern, this will simply send to your post.php script the query string s=this-url-does-not-exist . So it's up to your PHP script post.php to check whether this-is-not-a-url exists or not, as Apache cannot possibly know what blog post ID values are valid and which are not.

As a side note, I'd recommend using /blog/2012-08-24-whatever as the path you give to visitors, rather than /2012-08-24-whatever . That way you can reserve paths for other functions, such as /images without having to write a new exception in your .htaccess file every time you need to create a new utility path.