Cheat: Revealing all questions and answers of a Kahoot quiz.

kahoot.php

<?php

error_reporting(null);

if(!isset($_GET["pin"]))
    die("No PIN?");

$url = "https://kahoot.it/rest/challenges/pin/".$_GET["pin"];
$response = file_get_contents($url);
$jresponse = json_decode($response, TRUE);

$questions = $jresponse["kahoot"]["questions"];

foreach ($questions as $question) {
    echo $question["question"].": ".array_pop(array_filter($question["choices"], "check_true"))["answer"]."\n";
}

function check_true($choice) {
    return $choice["correct"];
}

?>

Makes sense. If you figure out a way to get it working, let me know. I’ll take a look at the Kahoot code once I run out of other things to do an ill let you know if I find anything :)