How to set up a redirect to pages without .php?

Question

htaccess

Hello! I have configured to display the address of pages without .php. But at the same time, if you add .php to the address, the page will still open. How to make pages with .php flip to without .php?

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

Answer 1

RewriteEngine On
RewriteBase /

RewriteCond %{THE_REQUEST} " /(index\.php|([^?]*)\.php)"
RewriteRule ^ /%2 [R=301,L,NE]

RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]