ขอ code php สร้าง Quiz แบบ facebook หน่อยครับ ต้องการสร้าง Quiz Online ครับผม

<form action="quiz_result.php" method="post">
<input id="question-1-answers-A" type="radio" name="question-1-answers" value="A" />

<label for="question-1-answers-A">A) Hypertext Markup Language </label>
<div>

<input id="question-1-answers-B" type="radio" name="question-1-answers" value="B" />

<label for="question-1-answers-B">B) Hypertext Markup</label>

</div>
<div>

<input id="question-1-answers-C" type="radio" name="question-1-answers" value="C" />

<label for="question-1-answers-C">C) Hypertext Programming</label>

</div>
<div>

<input id="question-1-answers-D" type="radio" name="question-1-answers" value="D" />

<label for="question-1-answers-D">D) None of the above</label>

</div>
<hr>
<input id="question-2-answers-A" type="radio" name="question-2-answers" value="A" />

<label for="question-2-answers-A">A) Hypertext Markup Language </label>
<div>

<input id="question-2-answers-B" type="radio" name="question-2-answers" value="B" />

<label for="question-2-answers-B">B) Hypertext Markup</label>

</div>
<div>

<input id="question-2-answers-C" type="radio" name="question-2-answers" value="C" />

<label for="question-2-answers-C">C) Hypertext Programming</label>

</div>
<div>

<input id="question-2-answers-D" type="radio" name="question-2-answers" value="D" />

<label for="question-2-answers-D">D) None of the above</label>

</div>
<input type="submit" value="Submit Quiz" />
</form>

<?php
$answer1 = $_POST['question-1-answers'];

$answer2 = $_POST['question-2-answers'];

$answer3 = $_POST['question-3-answers'];

$answer4 = $_POST['question-4-answers'];

$answer5 = $_POST['question-5-answers'];

$totalCorrect = 0;

if ($answer1 == "B") { $totalCorrect++; }

if ($answer2 == "A") { $totalCorrect++; }

if ($answer3 == "C") { $totalCorrect++; }

if ($answer4 == "D") { $totalCorrect++; }

if ($answer5) { $totalCorrect++; }

echo "
<div id=\"results\">$totalCorrect / 5 correct</div>
";
?>