&reftitle.constants; &extension.constants;

`SWOOLE_BASE` (`int`)

`SWOOLE_THREAD` (`int`)

`SWOOLE_PROCESS` (`int`)

`SWOOLE_IPC_UNSOCK` (`int`)

`SWOOLE_IPC_MSGQUEUE` (`int`)

`SWOOLE_IPC_PREEMPTIVE` (`int`)

`SWOOLE_SOCK_TCP` (`int`)

`SWOOLE_SOCK_TCP6` (`int`)

`SWOOLE_SOCK_UDP` (`int`)

`SWOOLE_SOCK_UDP6` (`int`)

`SWOOLE_SOCK_UNIX_DGRAM` (`int`)

`SWOOLE_SOCK_UNIX_STREAM` (`int`)

`SWOOLE_TCP` (`int`)

`SWOOLE_TCP6` (`int`)

`SWOOLE_UDP` (`int`)

`SWOOLE_UDP6` (`int`)

`SWOOLE_UNIX_DGRAM` (`int`)

`SWOOLE_UNIX_STREAM` (`int`)

`SWOOLE_SOCK_SYNC` (`int`)

`SWOOLE_SOCK_ASYNC` (`int`)

`SWOOLE_SYNC` (`int`)

`SWOOLE_ASYNC` (`int`)

`SWOOLE_KEEP` (`int`)

`SWOOLE_EVENT_READ` (`int`)

`SWOOLE_EVENT_WRITE` (`int`)

`SWOOLE_VERSION` (`string`)

`SWOOLE_AIO_BASE` (`int`)

`SWOOLE_AIO_LINUX` (`int`)

`SWOOLE_FILELOCK` (`int`)

`SWOOLE_MUTEX` (`int`)

`SWOOLE_SEM` (`int`)

`SWOOLE_RWLOCK` (`int`)

`WEBSOCKET_OPCODE_TEXT` (`int`)

`WEBSOCKET_OPCODE_BINARY` (`int`)

`WEBSOCKET_OPCODE_PING` (`int`)

`WEBSOCKET_STATUS_CONNECTION` (`int`)

`WEBSOCKET_STATUS_HANDSHAKE` (`int`)

`WEBSOCKET_STATUS_FRAME` (`int`)

`WEBSOCKET_STATUS_ACTIVE` (`int`)

`SWOOLE_FAST_PACK` (`int`)

`SWOOLE_LOG_DEBUG` (`int`)

- Debug log. Available as of swoole 2.1.2.

`SWOOLE_LOG_TRACE` (`int`)

- Trace log. Available as of swoole 2.1.2.

`SWOOLE_LOG_INFO` (`int`)

- Info log. Available as of swoole 2.1.2.

`SWOOLE_LOG_NOTICE` (`int`)

- Notice log. Available as of swoole 2.1.2.

`SWOOLE_LOG_WARNING` (`int`)

- Warning log. Available as of swoole 2.1.2.

`SWOOLE_LOG_ERROR` (`int`)

- Error log. Available as of swoole 2.1.2.

`SWOOLE_LOG_NONE` (`int`)

- None log. Available as of swoole 4.3.2.