Session issues

[psychohagis]

I have a log-in script, and once everything has been verified it iniated the session as follows,

[code=php:0]session_start();
$_SESSION['userid'] = $userid;
$_SESSION['username'] = $_POST['username'];[/code]

Then i have script which checks for a session which is as follows

[code=php:0]if (!isset($_SESSION['userid']) or $_SESSION['userid'] =='')
{
echo '<a href=/members/signup.php>sign up</a>&nbsp|&nbsp<a href=/members/signin.php>sign in</a>';
} else {

$username=$_SESSION['username'];

echo 'signed in as <a href=/members/>' . $username . '</a>&nbsp|&nbsp<a href=/members/signout.php>sign out</a>

}[/code]

However, this asks me to log-in, even when I have.

Have I started the session incorectly, what could be causing this?

[trq]

You need to call session_start() in every script that uses sessions.