[Resolved] Having trouble with basic sessions

Wok

Hi. As part of my effort to learn PHP, and (eventually) build a fully interactive website, I've recently been looking into PHP sessions.

I've read Webmonkey's article and I think I've got a pretty good understanding of how sessions work. However, when I try to run this basic script, it doesn't work properly. It's a simple count script that tells the user how many times they've visited the page during the session. Every time I visit the page, however, it always echoes '1'.

Here's the code:

<?php

session_start();

if(!$PHPSESSID)
{
	session_register('count');
} 
elseif(!$count)
{
	session_register('count');
}


$count++;

echo $count;

?>

I just can't see why it doesn't work. Please, tell me what I'm doing wrong.

tsinka

Hi,

try the following code:

<?PHP
session_start();

if(!isset($_SESSION['count']))
{
    $_SESSION['count'] = 0;
} else {
    $_SESSION['count']++;
}
?>
<html>
<head>
<title>Counter test page</title>
</head>
<body>
Count: <?=$_SESSION['count'] ?><br>
<a href="<?=$_SERVER['PHP_SELF'] ?>">Test it</a>
</body>
</html>

By using $_SESSION the variable will be registered with the session if it isn't already registered. In this case isset checks if the variable has already been registered.

Wok

Thanks, it's working perfectly now.

Marches off to write a guestbook