<?php
session_start();
if (!isset($_SESSION['keyID']) || !isset($_SESSION['vCode'])) {
//User tried to go here but didn't submit a keyid/vcode yet
$_SESSION['error'] = 'Please submit a key ID and verification code';
header('Location: index.php');
}
//Validate the key ID and vcode again - always ASSUME that there is a possibility they are invalid
$keyID = $_SESSION['keyID'];
$vCode = $_SESSION['vCode'];
if (!$valid_data) {
$_SESSION['error'] = "Your Key ID and Verification are invalid";
header('Location: index.php');
}
//do whatever to display relevant data based on $keyID and $vCode
?>