I have set up .htaccess file on my website which display SLUG text as page name in URL but without extension. e.g. Real url is
www.mywebsite.com/page.php?page=about-us
Then it loads on below url through url rewriting
www.mywebsite.com/about-us
Below is my .htaccess file code
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{REQUEST_URI} !^.*(images/|\.js|\.css).*$ [NC]
RewriteRule ^([a-zA-Z0-9_-]+)$ /page.php?page=$1
Now I want to show the .php extension on all pages, so that the urls should be like below
www.mywebsite.com/about-us.php
How can I do this ?