预定义常量

下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

System V message constants
Constant Type Changelog
MSG_IPC_NOWAIT int  
MSG_EAGAIN int As of 5.2.0
MSG_ENOMSG int As of 5.2.0
MSG_NOERROR int  
MSG_EXCEPT int