Trasferire il controllo ad un'altra pagina SENZA usare header("Location")

[Linus80]

<?php
  ob_start();

  if(isset($_POST['var1']) && isset($_POST['var2']) && 
    isset($_POST['action']) && ($_POST['action'] = 'invia'))
       {
             ob_clean();
             header("location: paginadue.php?var1=".$_POST['var1']."&var2=".$_POST['var2']);
             die;
       }

<form method="post" action="paginauno.php">
<select name="var1">
...
</select>

<select name="var2">
...
</select>
<input type="submit" name="action" value="invia" />
</form>
<?php ob_end_flush(); ?>