Clearing _POST array fully

Question

I want clear $_POST array content fully, all examples what I see in internet, looks like this:

if (count($_POST) > 0) {
    foreach ($_POST as $k=>$v)          


        

Answer 1

The solutions so far don't work because the POST data is stored in the headers. A redirect solves this issue according this this post.

How to delete $_POST variable upon pressing 'Refresh' button on browser with PHP?