Call a Row By Clicking A Button MYSQL/PHP - php

Question

I am creating an online exam. My layout is to show one question at a time and below it is the multiple choice. At the bottom of the multiple choice is a 'Next' button that when click will show the next question.
The questions and multiple choice are stored in a database.
The problem is, the next button functions, but it redirects me to another page. When all I want is to hide the previous question and show the next question when the next is clicked.
This is my code:
db
CREATE TABLE `english` (
`E_QueID` int(11) NOT NULL,
`Question` text NOT NULL,
`A` text NOT NULL,
`B` text NOT NULL,
`C` text NOT NULL,
`D` text NOT NULL,
`E` text NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
html
<div class="col-sm-8 bt-query">
<br>
<h4><left>Question 1</left> <right><div class="timer" data-seconds-left="20"></div></right></h4>
<br>
<?php
$query="SELECT * FROM english ORDER BY RAND() LIMIT 1";
$result = mysqli_query($conn, $query);
if (!$result) { // add this check.
die('Invalid query: ' . mysqli_error());
}
while ($row = mysqli_fetch_array($result)) {
echo $row['Question']. "<br />";
echo $row['A']. "<br />";
echo $row['B']. "<br />";
echo $row['C']. "<br />";
echo $row['D']. "<br />";
echo $row['E']. "<br />";
}
?>
<br>
<form action="englishq.php" method="get">
<input type="submit" name="next" value="Next">
</form>
</div>
englishq.php
<?php
$hostname = "localhost";
$user = 'root';
$password = '';
$db = 'questions';
//databse connection
$conn = mysqli_connect("$hostname", "$user", "$password", "$db")or die(mysqli_error());
if(isset($_GET['next'])){
$query="SELECT * FROM english ORDER BY RAND() LIMIT 1";
$result = mysqli_query($conn, $query);
if (!$result) { // add this check.
die('Invalid query: ' . mysqli_error());
}
while ($row = mysqli_fetch_array($result)) {
echo $row['Question']. "<br />";
echo $row['A']. "<br />";
echo $row['B']. "<br />";
echo $row['C']. "<br />";
echo $row['D']. "<br />";
echo $row['E']. "<br />";
}
}
?>

Answer 1

Leave the form's action parameter blank, so the form will submit back to the current page. Then use PHP to read the last question submitted and load the next one to display it to the user. You could use a hidden input field to keep track of which question was submitted.
Form code:
<form action="" method="post">
<input type="hidden" name="question_number" value="<?php echo $mynumber; ?>" />
<input type="radio" name="answer" value="A." /><?php echo $answerA; ?> <br/>
<input type="radio" name="answer" value="B." /><?php echo $answerB; ?> <br/>
<input type="radio" name="answer" value="C." /><?php echo $answerC; ?> <br/>
<input type="radio" name="answer" value="D." /><?php echo $answerD; ?> <br/>
<input type="submit" name="next" value="Next">
</form>
PHP code:
if (isset($_POST['question_number']))
{
// Record the last answer
$stmt = $db->prepare("INSERT INTO user_answer_table (answer_field) VALUES (':answer')");
$stmt->bindParams(':answer', $_POST['answer']);
$stmt->execute();
// Load the next question
$stmt = $db->prepare("SELECT * FROM question_table WHERE question_id = :questionid");
$stmt_>bindParams(':questionid',$_POST['question_number']+1);
$stmt->execute();
}

Answer 2

Check if a $_POST contains an answer. If yes, check if it is correct. Give a feedback. On incorrect answer you might ask the same question again, else generate a new random id.
Place a form around the page content, that sends the data back to the same script.
<form action="" type="post">
Give the client the question id.
<input type="hidden" name="qid" value="<?php echo $row['E_QueID';?>">
Inside the loop over the data table generate some radio buttons
<div>
<input type="radio" id="ansA" name="answer" value="A">
<label for="ansA"><?php echo $row['A'];?></label>
</div>
<div>
<input type="radio" id="ansB" name="answer" value="B">
<label for="ansB"><?php echo $row['B'];?></label>
</div>
Add a submit button and close the form tag.