Header help

From: DaRemedy (demonnet_at_btinternet.com.nospam)
Date: 09/26/04 

Date: Sun, 26 Sep 2004 19:23:42 +0000 (UTC)

Hiya, just need help with PHP headers.

I have an index php page which has the following code within a header
redirect:

<?php
if ( empty($_GET['month']) )
if (empty($_GET['year']) )
{
$month = date(n);
$year = date(Y);
header("Location: index.php?month=$month&year=$year");
}
?>

On the same index.php page, I have a shoutbox (include file) which inputs
the content of the shoutbox form into a database. After the user fills out
the form, I want the index page to refresh again because if I leave it as it
is and a user inputs info into the form, if they press refresh, the form
resubmits thus recording two entries into the shoutbox, or however many
times refresh is pressed.

When I add a header redirect into the shoutbox include file, once the user
clicks on send, index.php throws a headers cannot be sent error message.

Can anyone help?

Cheers.

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