What are some potential pitfalls of using mod_rewrite for multiple variables in PHP?

One potential pitfall of using mod_rewrite for multiple variables in PHP is that it can become complex and difficult to maintain as the number of variables increases. To solve this, you can use a single rewrite rule to pass all variables as query parameters to the PHP script, which can then parse and handle them accordingly.

RewriteEngine On
RewriteRule ^([^/]+)/([^/]+)/([^/]+)/?$ index.php?var1=$1&var2=$2&var3=$3 [QSA,L]