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The Quiz App Version 2

At this point, you should have a basic, working quiz that is pulling questions from a database. If not, take a look at The Quiz App to get started.

Sessions

You can store information in a session, which can be accessed on each page load. We'll use a session now to track which questions have already been answered, and we can record the name of person taking the quiz for a future high score table.

You can access what is in a session array in the same way you can see what is in a request array:

print_r($_SESSION);

Let's understand sessions first, separate from the quiz code. Create a new test page and call it testsession.php:

<?php
session_start();
?>
<html>
<body>
<?php
if(!empty($_REQUEST)) {
        print_r($_REQUEST);
}
 
if(!empty($_REQUEST['visitor_name'])) {
        $_SESSION['visitor_name'] = $_REQUEST['visitor_name'];
}
 
if(!empty($_SESSION['visitor_name'])) {
        echo "<p>Welcome ".htmlentities($_SESSION['visitor_name'])."</p>";
}
 
 
?>
<form method='post' action=''>
<input type='text' name='visitor_fullname' />
<input type='submit' name='username_button' value='Login' />
</form>
<?php
 
?>

The above code has an error in it. See if you can spot where. I'll talk people through it.

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The Quiz App Version 2

Sessions

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