Question on refresh

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?

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

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

>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?