Is there a way via htaccess to change URLs to clean URLs by deleting a parat of an URL?

Question

My all URLs formats are like these:

http://example.com/category?format=feed
http://example.com/category/sub_category/?format=feed

for example: http://example.com/computer/cpu/?format=feed

Is there a way via htaccess to change top URLs to these:

http://example.com/category/feed
http://example.com/category/sub_category/feed

example1: http://example.com/computer/cpu/feed

example2: http://example.com/computer/feed

Answer 1

These rules should meet both requirements. But allows you to change the category and subcat as long as the normal URLs don't change and format is always a key in the query string.

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)/(.+)/(.+)$ /$1/$2/?format=$3 [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)/(.+)$ /$1/?format=$2 [L]

Then you should be able to use these URL types.

http://example.com/category/feed
http://example.com/category/sub_category/feed

Answer 2

The following should achieve what you are looking for:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{QUERY_STRING} ^format=(.*)$
RewriteRule ^(.*)/(.*)/$ /$1/$2/%1? [L,R]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{QUERY_STRING} ^format=(.*)$
RewriteRule ^(.*)$ /$1/%1? [L,R]

The above will turn:

http://example.com/category?format=feed to http://example.com/category/feed

and

http://example.com/category/sub_category/?format=feed to http://example.com/category/sub_category/feed