Unable to insert multiple data into MYSQL database - php

Question

I am unable to insert the data entered in the text box into MYSQL database. I am trying to insert inputs from multiple textboxes into the database.
<?php
include('questionDB.php');
if(isset($_POST['submit'])){
$questionID = $_POST['id'];
$answer = mysql_real_escape_string(htmlspecialchars($_POST['answer']));
mysql_query("INSERT INTO answers(question_id, answer_body) VALUES ($questionID, $answer)");
}
?>
<form name="auctionQuestion" method="post">
<?php
$auctionSurvey = "SELECT question_id, survey_id, question_body FROM questions
WHERE survey_id='1'";
$aucResult = mysql_query($auctionSurvey) or die (mysql_error());
while($auctionRow = mysql_fetch_assoc($aucResult)){
echo $auctionRow['question_body']. "<input type=\"text\" name=\"answer\"><BR>";
?>
<input type="hidden" name="id" value="<?php echo $auctionRow['question_id'] ?>">
<?php
}
?>
<input type="submit" name="submit" value="Submit">
</form>

Answer 1

Use either:
VALUES ('$questionID', '$answer')
or:
VALUES ('" . $questionID . "', '" . $answer . "')
instead of VALUES ($questionID, $answer)

Answer 2

First thing to do is to generate the correct HTML, so that you will get back arrays of variables.
I think it will be something like this
echo $auctionRow['question_body'] . "<input type=\"text\" name=\"answer[]\"><BR>";
Similar for the other fields.
Then, when you get the post in, use print_r($_POST) to see exactly what you have got. Go from there.