本文目录导读:

Swoole Library 是 Swoole 官方提供的协程化组件库,它为 Swoole 提供了一系列常用的协程化功能封装,以下是详细的使用方法:
安装
# 安装 Swoole 扩展 pecl install swoole # 安装 Swoole Library composer require swoole/library
基础使用
协程客户端
<?php
use Swoole\Coroutine\Http\Client;
use function Swoole\Coroutine\run;
run(function () {
// HTTP 客户端
$client = new Client('www.example.com', 80);
$client->set(['timeout' => 1]);
$client->get('/');
echo $client->statusCode;
echo $client->body;
$client->close();
});
协程化数据库操作
<?php
use Swoole\Coroutine\PostgreSQL;
use function Swoole\Coroutine\run;
run(function () {
// PostgreSQL 连接
$pg = new PostgreSQL();
$conn = $pg->connect("host=localhost dbname=test user=postgres password=secret");
$result = $pg->query($conn, "SELECT * FROM users");
$rows = $pg->fetchAll($result);
var_dump($rows);
});
常用组件
协程 Redis 客户端
<?php
use Swoole\Coroutine\Redis;
use function Swoole\Coroutine\run;
run(function () {
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$redis->set('key', 'value');
$value = $redis->get('key');
echo $value;
});
协程 MySQL 客户端
<?php
use Swoole\Coroutine\MySQL;
use function Swoole\Coroutine\run;
run(function () {
$mysql = new MySQL();
$mysql->connect([
'host' => '127.0.0.1',
'user' => 'root',
'password' => 'password',
'database' => 'test',
]);
$result = $mysql->query('SELECT * FROM users');
var_dump($result);
});
高级特性
协程 Channel
<?php
use Swoole\Coroutine\Channel;
use function Swoole\Coroutine\run;
run(function () {
$channel = new Channel(10);
// 生产者
go(function () use ($channel) {
for ($i = 0; $i < 10; $i++) {
$channel->push($i);
echo "Produced: $i\n";
}
});
// 消费者
go(function () use ($channel) {
while (true) {
$data = $channel->pop();
if ($data === false) {
break;
}
echo "Consumed: $data\n";
}
});
});
协程 WaitGroup
<?php
use Swoole\Coroutine\WaitGroup;
use function Swoole\Coroutine\run;
run(function () {
$wg = new WaitGroup();
for ($i = 0; $i < 3; $i++) {
$wg->add();
go(function () use ($wg, $i) {
// 模拟耗时操作
co::sleep(1);
echo "Task $i done\n";
$wg->done();
});
}
$wg->wait();
echo "All tasks completed\n";
});
协程化 HTTP 服务
<?php
use Swoole\Http\Server;
use Swoole\Http\Request;
use Swoole\Http\Response;
$server = new Server("0.0.0.0", 9501);
$server->on("request", function (Request $request, Response $response) {
// 使用协程处理请求
go(function () use ($response) {
// 模拟异步操作
co::sleep(0.1);
$response->header("Content-Type", "text/plain");
$response->end("Hello Swoole Library\n");
});
});
$server->start();
最佳实践
组合使用
<?php
use Swoole\Coroutine\Http\Client;
use Swoole\Coroutine\Redis;
use function Swoole\Coroutine\run;
run(function () {
// 同时发起多个请求
$results = [];
go(function () use (&$results) {
// HTTP 请求
$http = new Client('api.example.com', 80);
$http->get('/data');
$results['http'] = $http->body;
$http->close();
});
go(function () use (&$results) {
// Redis 操作
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$results['redis'] = $redis->get('cache_key');
});
// 等待所有协程完成
co::sleep(1);
var_dump($results);
});
注意事项
- 版本兼容性:确保 Swoole 扩展版本 >= 4.4.0
- 内存管理:协程会占用内存,注意控制并发数
- 错误处理:使用
try-catch处理异常 - 性能优化:合理使用连接池,避免重复创建连接
Swoole Library 提供了丰富的协程化组件,可以大幅提升 PHP 应用的并发处理能力,特别适合构建高性能的网络应用和微服务。