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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.
I'll add to this page as we go through on the night.
Some functions we'll need:
phpinfo();
