Untitled

<html>
<head>
<title> My Test Form </title>
</head>
<body>
<?php
if (!isset($_SESSION['userid'])) {
  print "<form action = " . $_SERVER['PHP_SELF'] . " method = \"POST\"><br>";
  print "user: <input type=text name='userid'><br>";
  print "pass: <input type=text name='id'><br>";
  print "<input type=submit name='submit' value='submit'><br>";
}
elseif (!empty($_POST)) {
  $_SESSION['userid'] = $_POST['userid'];
  $_SESSION['id'] = $_POST['id'];
  print "foo";
}
else {
  print "You are logged in: " . print_r($_SESSION, TRUE);
}
?>
</body>
</html>