I am pretty new to using php and mysql and am struggling to understand how to go about processing a multiple choice quiz script to check if the answer given by the user is right or wrong and give the user the final result . I understand how to write and process register pages and login scripts and the like but for some reason I just can't understand what i need to do for this type of script So far my thinking has been 1) When the page is submitted have a query that compares the answer selected to the answer in the database. 2) Have php variables for correct and and incorrect both initialised to 0 and which will change depending on the answers given. 3) Use an if else statement similar to the code below to add up the score : - if($result['answer']==$_POST[$result['id']]){ $correct_answer++; }else{ $incorrect_answer++; }
4) Have a query that enters the person taking the quiz's grade in to the database. I would really appreciate it someone could give me some guidance for the best way to do this. I have included below my code for selecting the questions form the database.
<?php
// Starts the session
session_start();
/*
*/
if (!isset($_SESSION['user_level']) or ($_SESSION['user_level'] != 0))
{
header("Location: error_page.php");
exit();
}
?>
<?php
require_once ('mysqli_connect.php');
$email_address = ['email_address'];
$quizGradeBegan=("INSERT INTO learner_grade_db( email_address, score, )VALUES ('$email_address',0) ");
$result=@mysqli_query($dbcon, $submittedAnswerQuery);
if(isset($_SESSION['email_address'])){
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Q-Quiz: Learner Homepage</title>
<link rel="stylesheet" href="sdnt.css" />
</head>
<body>
<div class="wrapper"> <!-- Start of wrapper div -->
<div class="header"> <!-- Start of header div -->
<h1>e-Quiz: <br> Learner Homepage</h1>
<?php
//Makes a call to includes/leaner_nav.php in order to show The Learner Navigation Bar
require_once("includes/learner_nav.php");
//Makes a call to includes/welcome_name.php in order to show the Learners name.
require_once("includes/welcome_name.php");
/*Makes a call to includes/current_date in order to shows the current date.
Will appear in the Day Month Year Format.*/
require_once("includes/current_date.php");
?>
<!-- Shows the Change text size images -->
<div id="textSizer"><!-- Start of the textSizer div -->
<img id="smallStyler" class="textSize" src="imgs/fontSmall.jpg" height="18" width="18" alt="Smallest" />
<img id="mediumStyler" class="textSize" src="imgs/fontMedium.jpg" height="18" width="18" alt="Default" />
<img id="largeStyler" class="textSize" src="imgs/fontLarge.jpg" height="18" width="18" alt="Biggest" />
</div> <!-- End of textsizer div -->
</div><!-- End of Header div -->
<div class="article"> <!-- Start of the article div -->
<?php
$query=("SELECT question_id, question, distractor_1, distractor_2, distractor_3, distractor_4 FROM multiplechoice_db ORDER BY RAND() LIMIT 3 " );
$result = @mysqli_query ($dbcon, $query); // Run the query.
while($row = mysqli_fetch_array($result, MYSQL_BOTH)):?>
<br>
<form action="gradepage.php" method="post">
<?php echo $row['question_id'];?>
<br>
<?php echo $row['question'];?>
<br>
<input type="radio" value="1" id=' distractor <?php echo $row['question_id'];?>' name ='<?php echo $row['question_id'];?>'/><?php echo $row['distractor_1'];?>
<br>
<input type="radio" value="2" id=' distractor <?php echo $row['question_id'];?>' name ='<?php echo $row['question_id'];?>'/><?php echo $row['distractor_2'];?>
<br>
<input type="radio" value="3" id=' distractor <?php echo $row['question_id'];?>' name ='<?php echo $row['question_id'];?>'/><?php echo $row['distractor_3'];?>
<br>
<input type="radio" value="4" id=' distractor <?php echo $row['question_id'];?>' name ='<?php echo $row['question_id'];?>'/><?php echo $row['distractor_4'];?>
<br>
<?php endwhile;?>
<p> <input id="submit" type="submit" name="submit" value="Click To Submit Completed Quiz "></>
</div> <!-- End of the article div -->
<div class="aside"> <!-- Start of the aside div -->
<ul class="nav2">
<?php
//Makes a call to includes/leanersidebar1.php in order to show The Learner Sidebar
require_once("includes/learnersidebar1.php");
?>
</ul>
<br><br><br><br><br>
</div> <!-- End of the aside div -->
<div class="footer "><!-- Start of the footer div -->
<?php
//Makes a call to includes/footer.php in order to show the Footer
require_once("includes/footer.php");
?>
</div><!-- End of the footer div -->
</div><!-- End of the wrapper div -->
</body>
<html>
