<form action="pagin.php" method="post" enctype="application/x-www-form-urlencoded" name="tuo_form">
<input name="var1" type="hidden" value="valore1" />
<input name="var2" type="hidden" value="valore2" />
<input name="var3" type="hidden" value="valore3" />
<input name="tuo_pulsante" type="submit" value="Cliccami" />
</form>


e in pagina.php recupuri i valori con $_POST['var1'], ...