Posted by Rik on 08/21/07 14:17

On Tue, 21 Aug 2007 16:11:35 +0200, Shelly
<sheldonlg.news@asap-consult.com> wrote:

> Here is a problem I have come across a few times and wonder if there is a
> simple solution.
>
> On my form I have a submit button called, say, addEntry. I do a test
> for it
> as
>
> if (isset($_POST[addEntry'])) { code to insert stuff into the database }
>
> The problem is that after clicking the button, and the code returns it to
> the same screen, if the user clicks the refresh button on the browser it
> will add another entry. Is there a simple way to unset an html field
> test?

One of the most common ways to achieve this is to do the thing on a post,
without any output (unless possibly when there are errors), and then do a
header redirect to a page (the same or another, whichever is more
appropriate). POST values will be lost on a redirect, so this snippet will
not 're-enter' the information:

<?php
if(isset($_POST['submit'])){
//do your thing here
header('Location: http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
exit;
}
//displaying of page here
?>
--
Rik Wasmus

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