<?php
// page1.php

session_start();

echo 'Welcome to page #1';

$_SESSION['favcolor'] = 'green';
$_SESSION['animal'] = 'cat';
$_SESSION['time'] = time();


echo '<br /><a href="page2.php">page 2</a>';
echo '<br /><a href="page2.php?' . SID . '">page 2</a>';
?>

<?php
// page2.php

session_start();

echo 'Welcome to page #2<br />';

echo $_SESSION['favcolor']; // green
echo $_SESSION['animal']; // cat
echo date('Y m d H:i:s', $_SESSION['time']);


echo '<br /><a href="page1.php">page 1</a>';
?>