Remove sub directory and file extension

If I have site.com/page/about.php

How can I remove the sub directory and file extension?

Example: site.com/a开发者_JAVA技巧bout

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Use this in your .htaccess file

Options +FollowSymLinks
RewriteEngine On 
RewriteRule ^about(\/?)$ /page/about.php [NC,L]

Create your .htaccess in your root folder.