PHP, print_r($_SESSION) doesn't show its content?

Question

I want to see the content of the the array $_SESSION with the command print_r($_SESSION) but what I get is just the following output:

Array ()

what am I missing ?

thanks

Answer 1

Make sure you call session_start() at the top of all the pages you wish to use the session.

http://php.net/manual/en/function.session-start.php

<?php

session_start();

echo "<pre>";
print_r($_SESSION);
echo "</pre>";

?>