htaccess redirect dynamic posts

Question

Probably not the correct fora to ask, but.. Also probably a simple question..

We are changing our site to Wordpress, and need to redirect old posts.

Previously structure: http://url.com/art/12345.html

Needs to go to http://url.com/?p=12345

Answer 1

Use this before any mod_rewrite directives:

RedirectMatch Permanent ^/art/(\d+).html /?p=$1