How to use PHP swoole

PHP is used in the project, but due to the long and time-consuming task, after the front-end is submitted, the server needs to respond asynchronously.

There are many solutions for server asynchronous, including MQ, fsocket, Swoole, etc. (Recommended learning:swoole video tutorial)

Swoole is written in pure C language and provides an asynchronous multi-threaded server in PHP language, asynchronous TCP/UDP network client, asynchronous MySQL, asynchronous Redis , database connection pool, AsyncTask, message queue, millisecond timer, asynchronous file reading and writing, asynchronous DNS query. Swoole has built-in Http/WebSocket server/client and Http2.0 server.

The most important thing is that it perfectly supports the PHP language. So I used Swoole to build an asynchronous server to provide a series of tasks such as asynchronous response, push, and scheduled tasks.

Swoole is written in C language and is compiled and installed.

The installation dependencies are:

php-5.3.10 或更高版本 gcc-4.4 或更高版本

make autoconf pcre (centos系统可以执行命令：yum install pcre-devel)

Installation method:

phpize #如果命令不存在 请在前面加上php的实际路径 ./configure make sudo make install

After compilation is completed, you need to install php Add extension to .ini

extension=swoole.so

Server

class Server{ private $serv; public function __construct() { $this->serv = new swoole_server("0.0.0.0", 9501); $this->serv->set(array( //'worker_num' => 1, //一般设置为服务器CPU数的1-4倍 'daemonize' => 1, //以守护进程执行 'max_request' => 10000, 'task_worker_num' => 1, //task进程的数量 "task_ipc_mode " => 3 , //使用消息队列通信，并设置为争抢模式 'open_length_check' => true, 'dispatch_mode' => 1, 'package_length_type' => 'N', //这个很关键，定位包头的 'package_length_offset' => 0, //第N个字节是包长度的值 'package_body_offset' => 4, //第几个字节开始计算长度 'package_max_length' => 2000000, //协议最大长度 "log_file" => "/tmp/swoole_test.log" //日志 )); $this->serv->on('Receive', array($this, 'onReceive')); $this->serv->on('Task', array($this, 'onTask')); $this->serv->on('Finish', array($this, 'onFinish')); $this->serv->start(); } public function onReceive( swoole_server $serv, $fd, $from_id, $data ) { //放入任务队列，开始执行 $task_id = $serv->task( $data ); } public function onTask($serv,$task_id,$from_id, $data) { //做一些事情 }

Client

class Client{ private $client, $ip, $port, $params; public function __construct($ip, $port, $params) { $this->ip = $ip; $this->port = $port; $this->params = $params; $this->client = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC); $this->client->set(array( 'open_length_check' => true, 'package_length_type' => 'N', 'package_length_offset' => 0, //第N个字节是包长度的值 'package_body_offset' => 4, //第几个字节开始计算长度 'package_max_length' => 2000000, //协议最大长度 )); //设置事件回调函数 $this->client->on('Connect', array($this, 'onConnect')); $this->client->on('Receive', array($this, 'onReceive')); $this->client->on('Close', array($this, 'onClose')); $this->client->on('Error', array($this, 'onError')); //发起网络连接 $this->client->connect($ip, $port, 3); } public function onReceive( $cli, $data ) { echo "Received: " . $data . "\n"; } public function onConnect($cli) { $data = pack('N', strlen($data)) . $data; $cli->send($data); $cli->close(); } public function onClose( $cli) { echo "Connection close\n"; } public function onError() { echo "Connect failed\n"; } }

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