Call this code mypage.php
<?phpThe first thing we do with this code, is open the session using session_start(). We then set our first session variables (color, size and shape) to be red, small and round respectively.
// this starts the session
session_start();
// this sets variables in the session
$_SESSION['color']='red';
$_SESSION['size']='small';
$_SESSION['shape']='round';
print "Done";
?>
Just like with our cookies, the session_start() code must be in the header and you can not send anything to the browser before it. It's best to just put it directly after the <?php to avoid potential problems.
So how will it know it's me? Most sessions set a cookie on your computer to uses as a key... it will look something like this: 350401be75bbb0fafd3d912a1a1d5e54. Then when a session is opened on another page, it scans your computer for a key. If there is a match, it accesses that session, if not it starts a new session for you.
