定義済み定数
PHP Manual

Win32Service サービス型のビットマスク
定数 説明
WIN32_SERVICE_WIN32_OWN_PROCESS 0x00000010 The service runs in its own process.
WIN32_SERVICE_INTERACTIVE_PROCESS 0x00000100 The service can interact with the desktop. This option is not available on Windows Vista or later.
WIN32_SERVICE_WIN32_OWN_PROCESS_INTERACTIVE 0x00000110 The service runs in its own process and can interact with the desktop. This option is not available on Windows Vista or later.

定義済み定数
PHP Manual