The difference between swoole and libevent

Swoole is a PHP asynchronous network communication engine for production environments, allowing PHP developers to write high-performance asynchronous concurrent TCP, UDP, Unix Socket, HTTP, and WebSocket services . (Recommended Learning: SWOOLE Video Tutorial )

Swoole can be widely used in the Internet, mobile communications, corporate software, cloud computing, online games, IoT (IoT), car networking , smart home and other fields. Using PHP Swoole as a network communication framework can greatly improve the efficiency of enterprise IT R&D teams.

Libevent is a lightweight open source high-performance event notification library written in C language. It mainly has the following highlights:

Event-driven (event- driven), high performance;

Lightweight, focused on the network, not as bloated as ACE;

The source code is quite refined and easy to read; cross-platform, supports Windows, Linux, *BSD and Mac Os; supports a variety of I/O multiplexing technologies, epoll, poll, dev/poll, select and kqueue, etc.; supports events such as I/O, timers and signals; registers event priorities.

Libevent has been widely used as the underlying network library; such as memcached, Vomit, Nylon, Netchat, etc.

Swoole Socket network development framework is based on php's libevent and pcntl modules, and can only be used under Linux/Unix systems.

Please enable pcntl first and install the libevent extension.

pcntl: The PHP core module already contains pcntl. You only need to add --enable-pcntl when compiling. Of course, you can also use extension to expand

libevent: http:/ The class written in /pecl.php.net/package/libevent

needs to inherit from the TCPServer class, which is in the SwooleSocket package. Currently, only a single-process asynchronous event model is provided, which is suitable for network server programs that require less IO time, such as chat rooms. Multi-process asynchronous model and multi-process synchronous model will be provided in the near future.

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