定義済み定数
PHP Manual

Win32Service サービス開始型定数
定数 説明
WIN32_SERVICE_AUTO_START 0x00000002 A service started automatically by the service control manager during system startup.
WIN32_SERVICE_DEMAND_START 0x00000003 A service started by the service control manager when a process calls the StartService function.
WIN32_SERVICE_DISABLED 0x00000004 A service that cannot be started. Attempts to start the service result in the error code WIN32_ERROR_SERVICE_DISABLED.

定義済み定数
PHP Manual