如何在漂亮的URL上处理$ _GET请求

In index.php i have included a page say- "sample page.

Url looks like- "localhost.com/index.php?page=samplepage.php",

Using htaccess i changes the url to - localhost.com/samplepage

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [NC,L]

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

Now the problem is i'm not able to access get request coded on samplepage.php

without using httaccess it look like - localhost.com/skin/theme/samplepage.php?email=example@gmail.com

Now after using htaccess i'm not able to process get request for email on samplepage.php