Use mod_rewrite to remove parameter

Question

I would like to use mod_rewrite to remove a specifik query parameter from an URL.

Example: 1) User enters URL:

http://localhost/intra/page.htm?var1=123&var2=456&var3=789

2) mod_rewrite removes "var2=456"

3) New URL:

http://localhost/intra/page.htm?var1=123&var3=789

My problem is, that I only know the parameter name (var2), and not the value (456), and that I newer know the order of the parameters. It might be placed at the beginning as well as the end of the query string.

I would appreciate any help, as I used a lot of time searching the web, without finding any working solution.

Answer 1

Its a tricky problem since var2=anything can really appear anywhere in query string.

This code should work for you:

Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /

RewriteCond %{QUERY_STRING} ^(.+?&|)var2=[^&]*(?:&(.*)|)$ [NC]
RewriteRule ^ %{REQUEST_URI}?%1%2 [R=301,L]