session_regenerate_id

(PHP 4 >= 4.3.2, PHP 5)

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

说明

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.

参数

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

返回值

成功时返回 TRUE，或者在失败时返回 FALSE.

更新日志

版本	说明
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.

范例

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);
?>