PHP Manual: Update the current session id with a newly generated one

Description

bool session_regenerate_id ([ bool $delete_old_session = false ] )

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

When session.use_trans_sid is enabled, output must be started after session_regenerate_id call. Otherwise, old session ID is used.

Parameters

delete_old_session: Whether to delete the old associated session file or not.

Return Values

Returns TRUE on success or FALSE on failure.

Changelog

Version	Description
4.3.3	Since then, if session cookies are enabled, use of session_regenerate_id will also submit a new session cookie with the new session id.
5.1.0	Added the `delete_old_session` parameter.

Examples

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);
?>

session_regenerate_id

Description

Parameters

Return Values

Changelog

Examples

See Also