# Predefined Constants

## Table of Contents

- Win32Service Service Type Bitmasks
- Win32Service Service Status Constants
- Win32Service Service Control Message Constants
- Win32Service Service Control Message Accepted Bitmasks
- Win32Service Service Start Type Constants
- Win32Service Service Error Control Constants
- Win32Service Service Flag Constants
- Win32 Error Codes
- Win32 Base Priority Classes
- Win32 Recovery action
- Win32 Service informations

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.