first.php:
<?php
session_start();
$_SESSION['wdm_email'] = '[email protected]';
?>
–
second.php:
<?php
session_start();
echo 'Hi ' . $_SESSION['wdm_email'];
?>
–
When you will run second.php(after first.php), output would be:
Hi [email protected]
–
Do not forget to start the session at the top of the pages.
For more references: How to use session?