[SOLVED] Need php script just like used by mysmartprice dot com on Go To Store button (URL Cloaking)

Need code of php script used for example by mysmartprice dot com on their "Go To Store" button for URL cloaking.

I'm not 100% sure if I got your question right, but this is my guess of you mean:

Use PHP's header method like this:

<?php
    if(!isset($_GET["p"]))
        exit("No parameter \"p\"");

    $p = $_GET["p"];
    header("LOCATION: $p");
?>