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Mod_rewrite: is it possible to link to the backlink twice?

I have a rewrite rule (in the apache htaccess file) that tries to use the backlink twice from the same capture ($ 1):

RewriteRule ^([A-Za-z0-9_-]+)/?$ $1.php?nav=$1

It looks like the query string remains emtpy like

 example.com/new

corresponded as

 example.com/new.php?nav=

I want to

 example.com/new.php?nav=new

My question is: can I refer to $ 1 twice in an expression?

UPDATE:

The Apache documentation on mod_rewrite indicates that you can reference the capture as many times as you want in the replacement part of the rewrite rule. However, after trying a couple of days, I could not get it to work. I got my rule to go to the online regular expression testers, which are, but not on my site. I ended up redesigning my menu system to use simpler rewrite rules.

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2 answers

This is a regular expression that you use incorrectly:

 ^(A-Za-z0-9-_)$

The range is allowed only in square brackets, and you need to use + accessor to match more than 1 character.

Replace the RewriteRule with the following:

 RewriteRule ^([a-z0-9_-]+)/?$ $1.php?nav=$1 [L,NC,QSA]
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Try this instead:

 RewriteRule ^([\w]*)/?$ $1.php?nav=$1 [L]

And yes. Backlinks can be used more than once.

UPDATE

According to your comment:

 RewriteEngine On RewriteBase /information/ RewriteRule ^article([0-9]+)/?$ get-article.php?article=$1 [L] RewriteRule ^blog([0-9]+)/?$ get-blog.php?nav=blog&entry=$1 [L] RewriteCond %{REQUEST_URI} /new RewriteRule ^([\w]*)/?$ $1.php?nav=$1 [L]

The last condition and the last rule work fine. Result:

http://example.com/new.php?nav=new

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