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PHP协程实战：构建高并发IO密集型应用

资深开发工程师 php

2025-07-31 0 1,011

PHP协程实战：构建高并发IO密集型应用

一、性能对比

协程模式使并发能力提升1000倍，内存占用仅为传统方式的1/10

// 传统同步模式：100并发需要100个进程
// 协程模式：10000并发只需1个进程

二、基础概念

1. 协程创建

use SwooleCoroutine;

Coroutine::create(function() {
    $result = Coroutine::gethostbyname('example.com');
    echo "DNS解析结果: $result";
});

2. 协程通信

$channel = new CoroutineChannel(10);
Coroutine::create(function() use ($channel) {
    $channel->push(['data' => '消息内容']);
});

Coroutine::create(function() use ($channel) {
    $data = $channel->pop();
    print_r($data);
});

三、高级应用

1. 协程HTTP客户端

Coroutine::create(function() {
    $cli = new CoroutineHttpClient('api.example.com', 443, true);
    $cli->setHeaders(['Host' => 'api.example.com']);
    $cli->get('/data');
    echo $cli->body;
});

2. 协程MySQL连接池

$pool = new CoroutineMySQLPool([
    'host' => '127.0.0.1',
    'port' => 3306,
    'user' => 'root',
    'password' => '',
    'database' => 'test',
    'max_conn' => 50
]);

Coroutine::create(function() use ($pool) {
    $conn = $pool->get();
    $result = $conn->query('SELECT * FROM users');
    $pool->put($conn);
    print_r($result);
});

四、完整案例

实时聊天服务

$server = new SwooleWebSocketServer('0.0.0.0', 9501);

$server->on('Message', function($server, $frame) {
    // 广播消息给所有客户端
    foreach ($server->connections as $fd) {
        if ($server->isEstablished($fd)) {
            $server->push($fd, $frame->data);
        }
    }
});

$server->on('Request', function($request, $response) {
    // HTTP接口获取在线人数
    $response->header('Content-Type', 'application/json');
    $response->end(json_encode([
        'count' => count($server->connections)
    ]));
});

$server->start();

function runDemo() {
alert(‘需要安装Swoole扩展运行示例代码：pecl install swoole’);
}