HomePHP Page 4 - User Authentication with patUser (part 1)
Zone Six - PHP
Need to add authentication to your PHP-based Web application? Getit done in a jiffy with patUser, a PHP class which makes it possible torapidly add powerful user management capabilities to your Web application.
I'll begin with something simple - using patUser to restrict access to a Web page. In this scenario, only users who provide appropriate credentials - a login name and password - will be allowed access to the page; all other users will simply be presented with an error message.
Here's the code:
// include classes
// initialize database layer
$db = new patMySqlDbc("localhost", "db111", "us111", "secret");
// initialize template engine
$tmpl = new patTemplate();
// initialize patUser
$u = new patUser(true);
// connect patUser to database/template engines
// check credentials before displaying page
$uid = $u->requireAuthentication("displayLogin");
// restricted page goes here
<h2>Welcome to Zone 6!</h2>
<u>This is a restricted zone. Trespassers will be vaporized.</u> </center>
Your user ID is <?=$uid?>
<a href="logout.php">Log out</a>
As you can see, the script above contains an HTML page which
I'm assuming you want to restrict access to, surrounded with some fairly complicated code. The code is all explained a little further down, so don't worry too much about it just yet; instead, try accessing this page through your Web browser.
You should see something like this:
Try entering a random user name and password - since the database is currently empty, the system should barf and throw you back out with an error message.
Now, add a user to the "users" table,
INSERT INTO users (`uid`, `username`, `passwd`) VALUES ('', 'joe', 'joe');
and try logging in again with that username and password.
This time, patUser should recognize that your credentials are valid and allow you access to the page.