Mod_Rewrite category directory

I would like to forward categories to index.php from root directory; Here is the example;

d开发者_开发技巧omain.com/en/category1/category2/ ---> index.php?lang=en&cat1=category1&cat2=category2

How can I do that?

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Try this

RewriteEngine On
RewriteRule /([a-z]+)/([a-zA-Z0-9]+)/([a-zA-Z0-9]+).*  /index.php?lang=$1&cat1=$2&cat2=$3 [QSA,NC]