<?
session_start();

if(isset($_GET['action']) && $_GET['action'] == "submit") {
	$_SESSION['name'] = $_POST['name'];
	header("location: test.php");
}

if(isset($_SESSION['name'])) {
	echo "<h2>Ditt namn: ".$_SESSION['name']."</h2>\n";
}
?>

<form action="test.php?action=submit" method="post">
	<label for="name">Ditt namn:</label><br />
	<input type="text" name="name" id="name" /><br /><input type="submit" value="Skicka" />
</form>