Codice PHP:

if(isset($_GET['page'])){

switch($_GET['page']){

case 'pg1':
include('pagina1.php');
break;

case 'pg2':
include('pagina2.php');
break;

case 'home':
include('home.php');
break;

default:
include('error.php')

}

}else{include('home.php')} 
la variabile $_GET['page'] la passi cosi:

url/index.php?page=pagina