Detailed explanation of Workerman open source library: quickly build high-concurrency servers
With the continuous development of Internet technology, the demand for high-concurrency servers is increasing. To meet this need, developers need to choose a server framework that is efficient, reliable, and easy to use. Workerman is an open source library that meets these requirements. This article will introduce in detail the features and application examples of Workerman.
1. What is Workerman?
Workerman is a high-performance socket server framework developed based on PHP. Compared with traditional PHP servers, Workerman has higher concurrent processing capabilities and lower system resource usage. It adopts event-driven and multi-process mode and can easily handle tens of thousands of concurrent connections.
2. Features of Workerman
- High performance
Workerman adopts a multi-process and event-driven model, and uses the efficient libevent network library at the bottom . It can easily handle tens of thousands of concurrent connections and achieve high concurrent processing capabilities.
- Easy to use
Workerman uses a simple API design, and developers only need to focus on the implementation of business logic. Compared with traditional PHP development, the learning curve of the Workerman framework is very gentle.
- Support multiple communication protocols
Workerman supports multiple communication protocols such as TCP, UDP and WebSocket. Developers can choose the appropriate protocol for development based on specific needs.
- Rich function library
Workerman provides a series of function libraries, such as asynchronous database, asynchronous HTTP client, etc., to facilitate developers to implement richer functions.
3. Workerman application example
Let’s take a look at a simple example using Workerman to develop an instant chat room.
- Install Workerman
First you need to install Workerman with composer, execute the following command in the terminal:
composer require workerman/workerman
- Create server file
Create a server.php file in the project root directory and add the following content:
<?php
require_once __DIR__ . '/vendor/autoload.php';
use WorkermanWorker;
$ws_worker = new Worker("websocket://0.0.0.0:8000");
$ws_worker->count = 4;
$ws_worker->onConnect = function($connection) {
echo "New connection
";
};
$ws_worker->onMessage = function($connection, $data) use ($ws_worker) {
foreach($ws_worker->connections as $clientConnection) {
$clientConnection->send($data);
}
};
Worker::runAll();- Start the server
Execute the following command in the terminal Start the server:
php server.php start
- Create client page
Create an index.html file in the project root directory and add the following content:
<!DOCTYPE html>
<html>
<head>
<title>Workerman Chat</title>
</head>
<body>
<input type="text" id="message" placeholder="輸入消息">
<button id="send">發(fā)送</button>
<div id="chat"></div>
<script>
var ws = new WebSocket("ws://localhost:8000");
ws.onopen = function() {
console.log("Connected");
};
ws.onmessage = function(e) {
document.getElementById("chat").innerHTML += e.data + "<br>";
}
document.getElementById("send").addEventListener("click", function() {
var message = document.getElementById("message").value;
ws.send(message);
document.getElementById("message").value = "";
});
</script>
</body>
</html> - Open the browser to visit
Open the index.html file in the browser to chat in real time.
Through the above examples, we can see that it is very simple to use Workerman to develop a high-concurrency server. With just a few lines of code, you can build a high-performance, high-concurrency server. Developers can expand functions according to specific needs to implement more rich applications.
Summary:
Workerman is a very excellent PHP server framework. It has the characteristics of high performance, simplicity and ease of use, and supports multiple communication protocols. Using Workerman, you can easily build a high-concurrency server to meet the needs of various application scenarios. Whether it's an instant chat room, a game server, or a web crawler, Workerman can do it all. Therefore, Workerman is undoubtedly a powerful tool for PHP developers.
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