Right now I am updating my web site and I want to change all links to non-extension links like example.com/test.php to example.com/test. THis solution I found I put in .htaccess file:

 RewriteCond %{THE_REQUEST} ^GET\ /(([^/?]*/)*[^/?]+)\.php
RewriteRule ^.+\.php$ /%1 [L,R=301]

But at the same time I need to make redirection for links what located in lower level of my web-site like example.com/level/test2.php to example.com/test2.php. What should I write in .htaccess to redirect my files from lower level to higher and remove .php extension at the same time?

p.s. Thank you very much! and sorry for my poor English.