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I'm trying to put together a script that redirects visitors based on their IP, user agent and/or referral url. Basically I want the script to scan these three factors from the visitor, if any of them turn out to match my redirect-requirement it redirects the user. I know the code is horribly coded, I'm incredibly new to the php-scene and consider myself a complete noob. As you can see I want redirected visitors to go to google.com and un-redirected to msn.com(examples). Really thankful for all the help I can get! Right now nothing works, any suggestions?

<?php
 
function redirect($page) {
        Header( "HTTP/1.1 301 Moved Permanently" );
        header('Location: ' . $page);
        exit;
}
 
$referrals=array('pitchingit.org','referral2');
$badAgents = array("useragent1", "useragent2");
$deny = array("78.105.191..*","100.101.103..*");
 
if (in_array($_SERVER['HTTP_REFERER'], $referrals, FALSE)) 
{
        header("Location: http://www.google.com");
} 
else 
{
        header("Location: http://www.msn.com");
}  
 
if(in_array($_SERVER['HTTP_USER_AGENT'],$badAgents)) 
{
        redirect("http://www.google.com/");
        exit();
} 
 
$add=$_SERVER['REMOTE_ADDR'];
foreach ($deny as $ip) {
        if (preg_match("^.$add.*^",$ip)) {
        redirect("http://www.google.com");
        }
}
 
redirect("http://www.msn.com");
 
?>

How can one re-direct a visitor, without using a header re-direct?  I'd like a page to show up, then after about 5 seconds I need the visitor sent to another page.  How can I do this?