Hi

I wonder whether there is a way to clear the $_POST superglobal array or even set an array element to a new value.

I've got a self-referencing form where the user can enter some text and that is calling itself. I decide whether the page was initially displayed by something like this:
Code:
	if ( (isset($_POST["Submit"]) == TRUE) && ($_POST["Submit"] = 'Say') )
But once the user has submitted the form, $_POST["Submit"] will still be set when the page is reloaded (without pressing the submit button).

Is there a straigtforward way to clear or somehow modify the superglobal to prevent resubmit on reload? As you might expect, unset($_POST["Submit"]) or $_POST["Submit"]='none' does not work...

Thank you in advance

Oliver.