session_regenerate_id()

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.

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

Inputs: delete_old_session: Whether to delete the old associated session file or not. You should not delete old session if you need to avoid races caused by deletion or detect/avoid session hijack attacks.

Returns: Returns true on success or false on failure.