PHP pcntl multi-process usage example_PHP tutorial
Examples of pcntl multi-process usage in PHP
This article mainly introduces the usage of pcntl multi-process in PHP. The example analyzes the usage skills of pcntl operating multi-process, which is of great practical value. , friends in need can refer to it
The example in this article describes the usage of PHP's pcntl multi-process. Share it with everyone for your reference. The specific analysis is as follows:
PHP can also process a transaction using multiple processes using the PCNTL series of functions. For example, I need to obtain 800,000 pieces of data from the database and then do a series of subsequent processing. At this time, should I use a single process? You can wait until today next year. So you should use the pcntl function.
Suppose I want to start 20 processes and divide 1-80w of data into 20 parts. The main process waits for all child processes to finish before exiting:
?
3 4 5 6 715 16
17
18
19
20
21
22
23
24
25
|
$max = 800000; $workers = 20; $pids = array(); for($i = 0; $i < $workers; $i ){<🎜> <🎜>$pids[$i] = pcntl_fork();<🎜> <🎜>switch ($pids[$i]) {<🎜> <🎜>case -1:<🎜> <🎜>echo "fork error : {$i} rn";<🎜> <🎜>exit;<🎜> <🎜>case 0:<🎜> <🎜>$param = array(<🎜> <🎜>'lastid' => $max / $workers * $i,<🎜> <🎜>'maxid' => $max / $workers * ($i 1),<🎜> <🎜>);<🎜> <🎜>$this->executeWorker($input, $output, $param); exit; default: break; } } foreach ($pids as $i => $pid) { if($pid) { pcntl_waitpid($pid, $status); } } |

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
