PHP Drop-Down Box Link
This script will redirect a user to a site he or she has selected in the drop-down menu. The drop-down box sends the data over via the "post" method to the redirect.php page, which in turn sends the user to their selected site.
Simple, yet it works a treat! Try it out
<The Drop-Down Box >
<form action="redirect.php" method="post">
<input type="submit" value="Go!">
<The PHP Page Redirect.php >
$url = $_POST["url"];
Please let me know if this script was helpful to you.