php - .htaccess URL rewrite subfolder $_GET -

i trying create htaccess file website. got subfolders called admin. in subfolder index.php , content pages. want rewrite url's domain.com/admin/page1 example.

everything working main index files can't $_get['page'] working in admin folder.

url: http://techniekquiz.schl.nl/ http://techniekquiz.schl.nl/admin/ htaccess code:

rewriteengine on rewritebase /  rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewriterule ^(.*)$ ?page=$1 rewriterule ^admin/(.*)$ admin/index.php    [nc,l] rewriterule ^(.*)admin/(.*)$ ?page=$1 

my index.php (admin/index.php) file (only $_get part of it)

$page = (isset($_get['page']) ? $_get['page'] : '');         if (!empty($page) && file_exists(''.$page.'.php'))         {                require (''.$_get['page'].'.php');         }         elseif ( ( (!file_exists(''.$page.'.php')) or (!file_exists(''.$page.'.php'))  ) && !empty($page))         {             require('404.php');         }         else         {             require('dashboard.php');         }