What's wrong with RewriteRule in .htaccess?

Question

Apache HTTP Server

I want pages like site.ru/page.php to be displayed like site.ru/page/
What's wrong with my .htaccess?

RewriteEngine on
RewriteBase /
RewriteRule /(.*).php /$1/ [R=301, L]

Answer 1

So it will transfer to /page/, but it will already be a folder.
So it will transfer to /page, it will be a file, but php will not start in it.
RewriteRule (.*).php$ /$1 [R=301,L]