wiresplus on "How do I redirect to another page after a short delay"

Hello,

I want to have a thankyou page, that redirects after a short pause.

The page id will be 432.

I tried to add the following 7 second delay/redirect

<?php if(is_page(432)){
<meta http-equiv="refresh" content="7;url=[homepage url]" />
}
?>

in page.php, but no good.

What should I be doing?