<?php
			if(isset($_POST['answer_code'])){

                echo '<script type="text/javascript">';
                echo 'swal("Success!", "Correct", "success");';
                echo 'setTimeout(function(){window.top.location="quiz"} , 2000);';
                echo '</script>';

            }

?>

<?php

                                                    $query ="SELECT * FROM quiz ORDER BY RAND() LIMIT 1";
                                                    $result = mysqli_query($conn,$query);

                                                    while($row = mysqli_fetch_array($result))
                                                     {
                                                          echo '<form action="quiz" method="post">';
                                                          echo '<h1>"'.$row["question"].'"</h1>';
                                                          echo '<input type="hidden" name="'.$row["question"].'">';
                                                          echo '<input type="text" class="form-control" name="answer_code" placeholder="Type Answer" style="text-align: center" autofocus /><br>';
                                                          echo '<input type="submit" id="btnSubmit" class="btn btn-success btn-block btn-lg" value="Submit" onclick="disableButton(this)" />';
                                                          echo '</form>';
                                                     }
                                                ?>