- print_r: documentation ( source)
- session_regenerate_id: documentation ( source)
- session_start: documentation ( source)
- session_id: documentation ( source)
<?php
session_start();
$alte_sessionid = session_id();
session_regenerate_id(true);
$neue_sessionid = session_id();
echo "Alte Session: $alte_sessionid<br>";
echo "Neue Session: $neue_sessionid<br>";
print_r($_SESSION);