How to redirect URLs based on query string?

Question

I successfully mass migrated a Wordpress site to Drupal. Unfortunately in Wordpress, the content URL\'s were something like www.example.org/?p=123. My domain is still the

Answer 1

neither Redirect nor RedirectMatch allow you to specify a query string for the redirect source. [Source]

You have to use mod-rewrite for redirecting based on query string:

RewriteCond %{QUERY_STRING}  ^p=375$
RewriteRule (.*)  http://www.example.org/content/MyNewPage?  [R=301,L]