(PHP 4 >= 4.3.2, PHP 5)
session_regenerate_id — Update the current session id with a newly generated one
$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.
delete_old_sessionWhether to delete the old associated session file or not.
成功时返回 TRUE， 或者在失败时返回 FALSE。
| 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.
|
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);
?>