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PHP Manual for

session_regenerate_id

(PHP 4 >= 4.3.2)

session_regenerate_id -- Update the current session id with a newly generated one

Description

bool session_regenerate_id ( void )

session_regenerate_id() will replace the current session id with a new one, and keep the current session information.

Returns TRUE on success or FALSE on failure.

Example 1. A session_regenerate_id() example


<?php
session_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);
?>

Note: As of PHP 4.3.3, if session cookies are enabled, use of session_regenerate_id() will also submit a new session cookie with the new session id.