php redirect to another page

I'm a newbie in php.Recently I just want to begin to do affiliate marketing.Someone told me it's better to cloak affiliate urls in order to get better results.Then how to cloak affiliate urls with php?What I mean is redirecting to another page and the visitor can't see the affiliate link directly.

I usually use the link below to cloak affiliate links,it works well for me,you just need to add new line like this

  Code:

$links['http://www.affsite.com'] = 'http://afflink.affnetwork.com/click/i2ptmmXKfZ3ZG6cX5w' ;

after it,save this file as redirect.php,upload this php file to the root of your hosting,when you need to use this,just visit www.yourdomain.com/redirect.php?site=http://www.affsite.com
that's it

  Code:

<?php
    $site = $_GET['site'];
    $links = array();
    $links['http://www.affsite.com'] = 'http://afflink.affnetwork.com/click/i2ptmmXKfZ3ZG6cX5w' ;
# redirection
    header('Location: '.$links[$site]);
    ?>