- print_r: documentation ( source)
- session_regenerate_id: documentation ( source)
- session_id: documentation ( source)
<?php
$old_sessionid = session_id();
session_regenerate_id();
$new_sessionid = session_id();
echo "Old Session: $old_sessionid<br />";
echo "New Session: $new_sessionid<br />";
print_r($_SESSION);