How to capture a 'sub-section' of a URL in a rewrite rule?

Posted by George Edison on Stack Overflow See other posts from Stack Overflow or by George Edison
Published on 2010-05-10T22:46:05Z Indexed on 2010/05/22 7:30 UTC
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I know the title is a little bit strange, but here is what the URLs look like:

/user/xxx/page
/user/xxx/page?error=yyy

The rule for the first URL looks something like this:

RewriteRule ^user/(\d+)/page$    something.pl?id=$1 [L]

And to make it work with the second URL, it becomes:

RewriteRule ^user/(\d+)/page(error=\d+)?$    something.pl?id=$1 [L]

My question is... how do I capture the error number? I tried both of these:

RewriteRule ^user/(\d+)/page(error=(\d+))?$    something.pl?id=$1&error=$2 [L]
RewriteRule ^user/(\d+)/page(error=(\d+))?$    something.pl?id=$1&error=$3 [L]

But it isn't working...

How can I do this?

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