PHP forms through loop doesn't send specific session against checked radio button

Question

I am working on an e-testing system in which when a candidate login the test for which he/she was register will be shown to him/her.

I am getting the specific test through session to show the questions containing in that test. This was successfully done with the help of some "if" checks and two while loops(1 for questions and 2nd for answers against that question) having the form of radio buttons for selecting an answer.

Now each time when loop execute it create a form for single question and its answer, that way for multiple questions it results in multiple.

I am getting the checked radio buttons through ajax and posting it to another php file but I need a question id of checked answer as well to be passed to the 2nd php file

I used session but it only get the id of 1st checked and not for the others.

The 2nd php file name is answers.php for the time being i just want to post and get all values and session in answers.php file.

the main problem is with $_SESSION ['qid'] = $id; session

Note: i have used unset and destroy session to free the session and tried to re start it but i am field to do so..

<?php

include ("connection.php");

// $mysql_row = '';

$query_run = null;
$test = $_SESSION ['id'];
var_dump ( $_SESSION ['id'] );

$query1 = "SELECT * FROM question where testid = '" . $_SESSION ['id'] . "'";

if ($query_run = mysql_query ( $query1 )) {

    if (mysql_num_rows ( $query_run ) == null) {

        print "No result";

    } else {

        // echo'<form action="ss.php" method="post">';

        while ( $mysql_row = mysql_fetch_assoc ( $query_run ) ) {
            $id = $mysql_row ['qid'];
            $_SESSION ['qid'] = $id;
            echo ' <div class="panel-heading" style="background: black; font-weight:bold;">Question </div>';
            $data = $mysql_row ['questions'];
            ?>
<form>
                <br>
                <div class=" form-control well well-sm">

  <?php echo'<div style="font-weight:bold;"> Q: '.$data.' </div> '; ?>

<br>
                </div>


<?php

            $query1 = "SELECT * FROM `answer` where id='" . $id . "'";

            if ($query_run1 = mysql_query ( $query1 )) {
                if (mysql_num_rows ( $query_run ) == null) {

                } else {
                    while ( $mysql_row1 = mysql_fetch_assoc ( $query_run1 ) ) {

                        $data1 = $mysql_row1 ['ans1'];
                        $data2 = $mysql_row1 ['ans2'];
                        $data3 = $mysql_row1 ['ans3'];
                        $data4 = $mysql_row1 ['ans4'];

                        echo "\n";

                        ?>
                        <?php
                        echo '<div class="panel-heading" style="font-weight:bold;">Option1</div>';
                        ?>
<div class="form-control ">

                       <?php
                        echo "<input type='radio' value='$data1' name='opt1' onclick='OnChangeRadio (this)'> $data1<br />";

                        ?>

<br>
                </div>
                           <?php
                        echo '<div class="panel-heading" style="font-weight:bold;">Option2</div>';
                        ?>
                       <div class="form-control ">

                       <?php

                        echo "<input type='radio' value='$data2' name='opt1' onclick='OnChangeRadio (this)'> $data2<br />";

                        ?>


                       </div>
                             <?php
                        echo '<div class="panel-heading" style="font-weight:bold;">Option3</div>';
                        ?>
                       <div class="form-control ">

                       <?php

                        echo "<input type='radio' value='$data3' name='opt1' onclick='OnChangeRadio (this)'> $data3<br />";

                        ?>


                       </div>
                            <?php
                        echo '<div class="panel-heading" style="font-weight:bold;">Option4</div>';
                        ?>
                       <div class="form-control ">

                       <?php

                        echo "<input type='radio' value='$data4' name='opt1' onclick='OnChangeRadio (this)'> $data4<br />";
                        // echo'</form>';
                        ?>


                       </div>
<?php
                        echo '</form>';
                    }
                }
            }

            // $view_id1 = $view_id;

            // echo $view_id1;

        }
    }

} else {
    print mysql_error ();
}

// unset($_SESSION['qid']);

?>

connection.php

<?php 
session_start (); 
if (! $_SESSION ['user']) { 
    header ( "Location: index.php" ); 
    // redirect to main page to secure the welcome 
    // page without login access. 
}