How to change url rewrite by .htacces with .php extention

[rahulsingh4ut]

Hello friends my website is,
http://localhost/mywebsite/page.php?id=123
using .htaccess i changes my url like this
http://localhost/mywebsite/newpostof2016
but i want like this final url
localhost/mywebsite/newpostof2016.php

current using .htacces code is

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([a-zA-Z0-9]+)$ page.php?id=$1

[Dormilich]

@rahulsingh4ut

RewriteRule ^([a-zA-Z0-9]+)$ page.php?id=$1

use RewriteRule ^([a-zA-Z0-9]+) page.php?id=$1

[rahulsingh4ut]

What is different between your and my code. its not helpfull

[rahulsingh4ut]

Thank you so much its working fine. and sorry for last comment. thanks again.