OpenQuestion/vote.php

<?php

require_once __DIR__ . "/required.php";

$qid = $VARS['qid'];
$aid = $VARS['aid'];

$code = $database->get('questions', 'qcode', ['qid' => $qid]);

if (!$database->has('answers', ["AND" => ['qid' => $qid, 'aid' => $aid]])) {
    header("Location: ./r/$code/error");
    die();
}

if ($_SESSION['voted'][$qid] === true) {
    header("Location: ./r/$code/dejavu");
    die();
}

$database->insert("responses", ['qid' => $qid, 'aid' => $aid, 'timestamp' => date('Y-m-d H:i:s'), 'name' => $_SESSION['name']]);

$_SESSION['voted'][$qid] = true;

header("Location: ./r/$code/thanks");