Using URL variables in and include statement PHP -

i trying use url variable trigger page included "include" in php. easy in coldfusion simple line, how can done without bunch of if statements?

<a href="index.php?pageid=products" >products</a> include('/inc'.$_get['pageid']).'.php'); 

this may shortest code question:

to make thing easier create file named: inc.404.php handle errors

<?php     $page = (array_key_exists('page', $_get) ? $_get['page'] : '404');//we're sure inc.404.php there     $filename = 'inc.' . $page . '.php';     if(is_file($filename) === false){        $filename = 'inc.404.php';     }     include $filename; ?> 

but using php frameworks symfony make world better place