I can not get url in php using htaccess

This is the code I'm using, but it does not send the url to the shoes.php file, but I put the index.php file and it sends.

How to solve this? That is how to send the URL to the shoes.php file?

RewriteEngine on
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule ^(.*)$ sapatos.php?url=$1