Workerman development: How to implement asynchronous task processing

Workerman development: How to implement asynchronous task processing requires specific code examples

Workerman is a PHP asynchronous event-driven network framework that not only supports high concurrency and high-performance networks Program development can also be used for asynchronous task processing. In web development, there are many tasks that require asynchronous processing, such as sending emails, SMS notifications, video transcoding, and so on. This article will introduce how to use Workerman to process asynchronous tasks and provide specific code examples.

1. Asynchronous tasks and processing methods

In web development, there are many tasks that require asynchronous processing, such as sending emails, SMS notifications, video transcoding, etc. These tasks require a lot of time and resources to complete. If completed in the main program, the response time will be too long and the user experience will be affected. Therefore, using asynchronous task processing, these tasks can be completed in the background without affecting the execution of the main program.

In asynchronous task processing, it is generally implemented through message queues or scheduled tasks. Among them, message queue is a concurrent programming technology that encapsulates asynchronous tasks into messages and stores them in the queue. Then through an asynchronous task processor, the message is taken from the queue and the task is executed. In addition, a scheduled task refers to executing a job periodically within a predetermined time interval.

2. Workerman implements asynchronous task processing

1. Introducing the Workerman framework

Before you start using the Workerman framework for asynchronous task processing, you need to install it first. You can use composer to install it, or download and unzip Workerman to the specified directory.

When introducing the Workerman framework, you need to use the autoload file composer.json or autoload.php, choose according to your own usage.

For example, the way to use composer.json:

{
    "require": {
        "workerman/workerman": "4.0.*"
    }
}

The way to use autoload.php:

<?php
require_once __DIR__ . '/workerman/autoload.php';

2. Create an asynchronous task processor

When using Workerman for asynchronous task processing, you need to create an asynchronous task processor first. The asynchronous task processor can be implemented by defining a class and inheriting the Worker class in Workerman. The Worker class is an event-driven service class that can enable multiple processes to handle connections, events, etc. at the same time.

For example, create a MyTask class and inherit the Worker class:

use WorkermanWorker;

class MyTask extends Worker
{
    public function __construct()
    {
        //设置异步任务使用的进程数，默认为1
        parent::__construct('text://0.0.0.0:2345');
        $this->name = 'MyTask';
    }

    public function onWorkerStart()
    {
        //异步任务处理逻辑
        $this->addFunction('mytask', function($task_data){
            //处理异步任务
            //...
        })
    }
}

In the above code, a MyTask class is defined and the number of processes used by the asynchronous task is set in its constructor. After that, the asynchronous task is processed in the onWorkerStart function, and the processing function is added to the asynchronous task queue through the addFunction function.

3. Define the asynchronous task sending end

In asynchronous task processing, you generally need to send an asynchronous task to the queue first and let the asynchronous task processor process it. Therefore, it is necessary to define an asynchronous task sender.

For example, define a MyTaskSender class:

use WorkermanWorker;

class MyTaskSender
{
    public static function send($task_data)
    {
        $client = new WorkermanClientAsyncTcpConnection('text://127.0.0.1:2345');
        $client->onConnect = function()use($task_data, $client){
            $client->send(json_encode(['task'=>'mytask', 'data'=>$task_data]));
            $client->close();
        };
        $client->connect();
    }
}

In the above code, a MyTaskSender class is defined and a send function is defined, which uses the AsyncTcpConnection class to connect to the asynchronous task processor, and Send asynchronous tasks that need to be processed to the queue.

4. Use the asynchronous task sender to send asynchronous tasks

In the above steps, the asynchronous task processor and the asynchronous task sender have been defined. Next, you can send asynchronous tasks through the asynchronous task sender.

For example, when using the MyTaskSender class to send an asynchronous task, you can use the following method:

$task_data = ['task_param1'=>'value1', 'task_param2'=>'value2'];
MyTaskSender::send($task_data);

In the above code, the parameter $task_data of an asynchronous task is defined and passed in the MyTaskSender class The send function sends an asynchronous task to the queue.

3. Summary

This article introduces how to use the Workerman framework to implement asynchronous task processing, and provides specific code examples. In asynchronous task processing, the Workerman framework can be used to facilitate multi-process processing and has high processing efficiency. Users can make corresponding modifications and adjustments according to their own needs and actual conditions.

The above is the detailed content of Workerman development: How to implement asynchronous task processing. For more information, please follow other related articles on the PHP Chinese website!