session_name
session_module_name
session_save_path
session_id
session_regenerate_id
session_decode
session_register
session_unregister
session_is_registered
session_encode

session_start
session_destroy
session_unset
session_set_save_handler
session_cache_limiter
session_cache_expire
session_set_cookie_params
session_get_cookie_params
session_write_close
session_commit