why does not .htaccess file work on the following website sak.ps?

I search for a way to hid开发者_如何学Ce php extension to show website files as folders and I found it can be done using .htaccessm and i found this code :

   RewriteEngine on
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME}\.php -f
    RewriteRule ^(.*)$ $1.php

But it does not working for me! Van anyone help please?

rewrite mode is enabled on server

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The website uses nginx which does not support Apache .htaccess files.

See https://serverfault.com/questions/24243/nginx-support-for-htaccess-rewrite-rules-differences-from-apache