body includes using GET url

[chong]

Afternoon all, Im fairly new to PHP and I have started to experiment with some code in order to get php to include my pages into the body(for instance index.php?=news etc) i have written a simple part of my code below, however i am a little stuck...i need to add the .php to the $page variable however im lost - im positive ive gone hugely wrong and missing something!

any help would be much appreciated!

<?php include('header.inc'); ?>

<?php
      $page = $_GET['url'];

if !$page{
$body_inc = 404_notfoud
}
$body_inc = $page;
include($body_inc);
?>


<?php include('footer'); ?>

[taith]

[code]
<?php
include('header.inc');
$page = $_GET['url'];
if(empty($page)) $page = 404_notfoud
include($page.'.php');

include('footer');
?>[/code]