Headers: How To Use Them

Could someone please explain how to use headers. I'd like to

1) Grab form data

2) Process data

3) re-direct to another php page

Where in my code do I place the header tag. I'm also using session variables.

sample code:

<?php
session_start();
?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

===> HTML tags

<?php

include files

processing

?>.

Where would I insert the header and what is the exact syntax.

Cheers :-)

You'll want to readup in the manual:

Ther can be NO output whatsoever if you plan on using header(). Not even a space. So the typical use of header resembles:

<? top of file
...
... do stuff
...
... more stuff
...
...
... stuff is done!

header("Location: place_to_redirect_to");
exit; // for safety reasons
?>