Only display once in while loop - php

Question

Im using a while loop to go through a DB and pull out some questions and answers. That mostly works apart from the facts the the question order isnt correct.
My question is how do I get the questions to print correctly
Eg :
Q1
Q2
A to Q1
Q3
A to Q2
Blank
A to Q3
Heres an image of what I mean:
Here is the code im using minus the query because I know it works. I think its the if statement thats wrong.
$result = mysqli_query($conn, "SELECT
q.QText, q.id AS QId, ua.id, a.AText, ca.id, ca.Answer_ID,
case when a.id = ua.Answer_ID then 'x' else NULL end as IsUserAnswer ,
case when a.id = ca.Answer_ID then 'x' else NULL end as IsCorrectAnswer
FROM user_answers ua
INNER JOIN question q ON q.id = ua.Question_ID
INNER JOIN answer a ON a.Question_ID = q.id
INNER JOIN correct_answer ca ON ca.Question_ID = q.id
WHERE ua.Test_ID=1
ORDER BY q.ID") or die(mysqli_error($conn));
$lastQuestionID = 0;
while ($data2 = mysqli_fetch_array($result))
{
if ($data2['QId'] != $lastQuestionID)
echo '<p>Q. ' . $data2['QText'] . '</p>
<table class="striped centered">
<thead>
<tr>
<th>Answer</th>
<th>Your Answer</th>
<th>Correct Answer</th>
</tr>
</thead>';
$lastQuestionID = $data2['QId'];
echo '
<tr>
<td>' . $data2['AText'] . '</td>
<td>' . $data2['IsUserAnswer'] . '</td>
<td>' . $data2['IsCorrectAnswer'] . '</td>
</tr>';
}
echo "</table>";

Answer 1

Your table closing is defined incorrectly. Do this instead:
$result = mysqli_query($conn, "Query") or die(mysqli_error($conn));
$lastQuestionID = 0;
$isTableOpen = false;
while ($data2 = mysqli_fetch_array($result)) {
if ($data2['QId'] != $lastQuestionID) {
if ($isTableOpen) {
echo '</table>';
}
$isTableOpen = true;
echo '<p>Q. ' . $data2['QText'] . '</p>
<table class="striped centered">
<thead>
<tr>
<th>Answer</th>
<th>Your Answer</th>
<th>Correct Answer</th>
</tr>
</thead>';
}
echo '
<tr>
<td>' . $data2['AText'] . '</td>
<td>' . $data2['IsUserAnswer'] . '</td>
<td>' . $data2['IsCorrectAnswer'] . '</td>
</tr>';
$lastQuestionID = $data2['QId'];
}
if ($isTableOpen) { // Close last open table
echo '</table>';
}