What are the implementation methods of websocket communication in PHP7.0?

With the continuous development of Internet applications, the requirements for high concurrency, real-time, and interactivity are getting higher and higher, and the commonly used HTTP protocol can no longer meet these requirements. WebSocket communication has become an indispensable part of application development because of its real-time, stability, high concurrency and other advantages.

In PHP7.0, there are the following ways to implement WebSocket communication:

1. Swoole expansion

Swoole is a high-performance asynchronous network Communication framework, which supports multi-process, multi-coroutine, asynchronous IO and other features. Through the WebSocket framework provided by Swoole, you can easily write WebSocket servers and clients, supporting multiple message formats and data encoding methods.

Sample code for writing WebSocket server using Swoole:

$server = new swoole_websocket_server("0.0.0.0", 9501);

$server->on("open", function(swoole_websocket_server $server, $request) {
    echo "client-{$request->fd} is connected
";
});

$server->on("message", function(swoole_websocket_server $server, $frame) {
    echo "received message: {$frame->data}
";
    $server->push($frame->fd, "server received: {$frame->data}");
});

$server->on("close", function(swoole_websocket_server $server, $fd) {
    echo "client-{$fd} is disconnected
";
});

$server->start();

2. Websocket-Async expansion

Websocket-Async is an asynchronous network communication framework based on ReactPHP , provides WebSocket server and client support. It is characterized by non-blocking IO operations and can quickly respond to multiple client requests.

Example code for writing a WebSocket server using Websocket-Async extension:

$loop = ReactEventLoopFactory::create();
$socket = new ReactSocketServer($loop);
$webSock = new ReactSocketServer('0.0.0.0:8080', $loop);

$webServer = new RatchetServerIoServer(
    new RatchetHttpHttpServer(
        new RatchetWebSocketWsServer(
            new MyWebSocket()
        )
    ),
    $webSock
);

$loop->run();

3. Workerman framework

Workerman is a high-performance, high-concurrency, multi- The PHP framework features low process and memory usage, and supports multiple protocols such as TCP, UDP, and Websocket. Through the WebSocket service provided by Workerman, the writing of WebSocket server and client can be realized.

Sample code for writing a WebSocket server using the Workerman framework:

use WorkermanWorker;
use WorkermanConnectionAsyncTcpConnection;

$worker = new Worker("websocket://0.0.0.0:8383");

$worker->onWorkerStart = function() {
    echo "websocket server started!
";
};

$worker->onMessage = function($connection, $data) {
    $connection->send('server received: ' . $data);
};

Worker::runAll();

In summary, there are many ways to implement WebSocket communication in PHP7.0, and developers can choose the appropriate one based on actual needs. plan. No matter which method is used, you need to have an in-depth understanding of the WebSocket protocol and network programming related knowledge to develop a high-performance, stable, and secure WebSocket application.

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