is it possible to send multiple forms to php self with post

Question

I have only been able to do this with GET, How do I submit multiple forms without the previous data being lost when resubmitting a different form via POST ?

Answer 1

Use hidden input fields?

<input type="hidden" />

Store in a session?

session_start();
$_SESSION['blarr'] = $_POST['old-data'];

Answer 2

Persist the previous form data into a database or session.