(PHP 4 >= 4.3.2, PHP 5)
session_regenerate_id — Update the current session id with a newly generated one
session_regenerate_id() will replace the current session id with a new one, and keep the current session information.
Whether to delete the old associated session file or not. Defaults to FALSE.
Returns TRUE on success or FALSE on failure.
Example #1 A session_regenerate_id() example
<?phpsession_start();$old_sessionid = session_id();session_regenerate_id();$new_sessionid = session_id();echo "Old Session: $old_sessionid<br />";echo "New Session: $new_sessionid<br />";print_r($_SESSION);?>