今天我们来安装和测试一下php的多并发高性能网络通信扩展，这个扩展是使用C语音开发的，加载到PHP以后，在PHP的层面上实现了多并发异步通信，模拟了go语音的很多特性，极大的拓宽了PHP的应用场景。

直接使用官网上的那句命令就可以，安装swoole时可能会出现错误和卡住不动，多试几次就能成功。
pecl install swoole
要配置php的cli环境和fpm环境的ini文件，把扩展的so加载进去。

视频地址：

https://www.bilibili.com/video/av70354024/

httpServer.php

$http = new swoole_http_server("127.0.0.1", 9501);

$http->on("start", function ($server) {
        echo "Swoole http server is started at http://127.0.0.1:9501\n";
});

$http->on("request", function ($request, $response) {
        $response->header("Content-Type", "text/plain");
            $response->end("Hello World\n");
});

$http->start();

注意使用httpClient的时候会有一些错误，首先新版的swoole移除了Swoole\Http\Client,会报类找不到，其次要在协程中执行get方法

httpClient.php

$client = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);
$client->on("connect", function($cli) {
	    $cli->send("hello world\n");
});
$client->on("receive", function($cli, $data){
	    echo "received: {$data}\n";
});
$client->on("error", function($cli){
	    echo "connect failed\n";
});
$client->on("close", function($cli){
	    echo "connection close\n";
});
$client->connect("127.0.0.1", 9502, 0.5);

taskServer.php

<?php
$serv = new Swoole\Server("127.0.0.1", 9502, SWOOLE_BASE);

$serv->set(array(
    'worker_num' => 2,
    'task_worker_num' => 4,
));

$serv->on('Receive', function(Swoole\Server $serv, $fd, $from_id, $data) {
    echo "接收数据" . $data . "\n";
    $data = trim($data);
    $task_id = $serv->task($data, 0); 
    $serv->send($fd, "分发任务，任务id为$task_id\n");
});

$serv->on('Task', function (Swoole\Server $serv, $task_id, $from_id, $data) {
    echo "Tasker进程接收到数据";
    echo "#{$serv->worker_id}\tonTask: [PID={$serv->worker_pid}]: task_id=$task_id, data_len=".strlen($data).".".PHP_EOL;
    $serv->finish($data);
});

$serv->on('Finish', function (Swoole\Server $serv, $task_id, $data) {
    echo "Task#$task_id finished, data_len=".strlen($data).PHP_EOL;
});

$serv->on('workerStart', function($serv, $worker_id) {
    global $argv;
    if($worker_id >= $serv->setting['worker_num']) {
        swoole_set_process_name("php {$argv[0]}: task_worker");
    } else {
        swoole_set_process_name("php {$argv[0]}: worker");
    }
});

$serv->start();

　　

taskClient.php

$client = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);
$client->on("connect", function($cli) {
        $cli->send("hello world\n");
});
$client->on("receive", function($cli, $data){
        echo "received: {$data}\n";
});
$client->on("error", function($cli){
        echo "connect failed\n";
});
$client->on("close", function($cli){
        echo "connection close\n";
});
$client->connect("127.0.0.1", 9502, 0.5);