mod_rewrite：更改单个查询字符串参数

Question

I have a URL like this:

http://foo.bar/index.php?page=this-is-the-page

Now I have to find misspelled URLs with mod_rewrite like this:

http://foo.bar/index.php?page=this--is-the-page

unfortunally so far I wasn't able to find the correct RewriteRule :

Options -MultiViews
RewriteEngine On

RewriteCond %{QUERY_STRING} ^page=(\w+)--((\w+)(-(\w+))*)$
RewriteRule ^index\.php$ /index.php?page=%1-%2

The problem seems to be the "?" which should mean QSD. Anyway it was suggested this way in articles eg mod_rewrite to change query string parameter name

So, how can I reorganize the query string values with mod_rewrite only? SEO-friendliness and hacking the PHP code is not an issue here

Answer 1

Try this rule:

RewriteCond %{QUERY_STRING} ^page=(.*?)--([^&]*)
RewriteRule ^index\.php$ /index.php?page=%1-%2 [L,R]