mod_rewrite: replace query_string parameter values

Question

I need to replace the values of the QueryString by using Apache mod_rewrite. Many values have to be replaced by one new value ({oldValueA1, oldValueA2} => newValueA; {oldValueB1, oldValueB2} => newValueB). The parameter appears variable times in the query_string. The order of the parameter values is random. If the redirected query_string contains a value twice, it doesn't matter for me. The request_uri is variable, but should not be change during the redirect.

Here are some examples. The first row contains the original url, the second the new one.

localhost/mag/cat/?myParameter=oldValueA1&myParameter=oldValueB1
localhost/mag/cat/?myParameter=newValueA&myParameter=newValueB

localhost/mag/?myParameter=oldValueA2
localhost/mag/?myParameter=newValueA

localhost/dig/cat/?myParameter=oldValueB1&myParameter=oldValueA2
localhost/dig/cat/?myParameter=newValueB&myParameter=newValueA

localhost/dig/?myParameter=oldValueB2&oldValueB3
localhost/dig/?myParameter=newValueB&newValueB

I tried several RewriteRules with some Conditions, but i can't find a solution for this problem. Has anyone an idea?

Thx! :)

not related: when you have several parameters they should be separated with &, not ? — regilero
– regilero, Commented Nov 6, 2013 at 13:30
rewriting query string parameters is really hard, check this answer for details stackoverflow.com/questions/7703552/rewriting-dynamic-urls/… . As you can see you will have a lot of problems (like working with not yet encoded chars), maybe you could try it in the application code instead of apache/mod_rewrite — regilero
– regilero, Commented Nov 6, 2013 at 13:35
Thx, your right about the ? and &. Copy-paste-mistake. I will change it. — user2960606
– user2960606, Commented Nov 6, 2013 at 13:50
If you pass localhost/mag/cat/?myParameter=newValueA&myParameter=newValueB, only the last, ie, myParameter=newValueB is passed to your CGI script. — jacouh
– jacouh, Commented Nov 6, 2013 at 19:03
@jacouh I tested it with the solution in my answer below and both values are passed. It works fine. — user2960606
– user2960606, Commented Nov 11, 2013 at 21:48

user2960606 · Accepted Answer · 2013-11-11 21:44:14Z

4

I found a solution for my problem. Maybe it will help someone else, too. Here it is:

RewriteCond %{QUERY_STRING} ^(.*[&?]|)myParameter=(oldValueA1|oldValueA2)([&?].*|)$
RewriteRule ^(.*)$ $1?%1myParameter=newValueA [R=301,NC,L]
RewriteCond %{QUERY_STRING} ^(.*[&?]|)myParameter=(oldValueB1|oldValueB2)([&?].*|)$
RewriteRule ^(.*)$ $1?%1myParameter=newValueB [R=301,NC,L]

answered Nov 11, 2013 at 21:44

user2960606

951 silver badge8 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Chad Cloman Over a year ago

I think you forgot to include %2 in the rewritecond directive. This will omit any query string parameters after myParameter. Thanks for this!

Collectives™ on Stack Overflow

mod_rewrite: replace query_string parameter values

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related