<form method="POST">
<?php
if (isset($_POST["cancella"])) {
?>
<input type="number" name="input1" value="" />
<input type="number" name="input2" value="" />
<?php
} else {
?>
<input type="number" name="input1" value="<?php
$num1->stampN();
?>
" />
<input type="number" name="input2" value="<?php
$num2->stampN();
?>
" />
<?php
}
?>
<br />
<br />
