<?php
if($_GET["p"]="WebHosting")webhosting();
else
if($_GET["p"]="VPSHosting")vpshosting();
else
if($_GET["p"]="ResellerHostinge")reseller();

function webhosting () {
    echo 'TEST WEBHOSTING';
}
function vpshosting () {
    echo 'TEST VPSHOSTIGN';
}
?>