Home Development Tools composer Introducing four methods of composer automatic loading

Introducing four methods of composer automatic loading

Sep 08, 2020 am 09:28 AM
composer

下面由composer教程栏目给大家介绍composer自动载入的四种方式 ,希望对需要的朋友有所帮助!

Introducing four methods of composer automatic loading

composer自动载入的四种方式

composer 是PHP的包依赖管理工具,类似于node.js的npm 。并非官方,但已经十分流行。

对于第三方包的自动加载,composer 提供里四种支持。分别是psr-0,psr-4,生成class-map,直接包含files

psr-0 自动加载

psr-1 基本代码规范

psr-2 代码样式规范

psr-3 日志接口

psr-4 自动加载

psr-0 与 psr-4的主要区别是 psr-4中下划线不做任何处理。psr-0中下划线会转义为目录分隔符

在主文件 index.php中编写

require 'vendor/autoload.php';
Copy after login

1.PSR-4

在composer.json中是这样配置的

{
  "aotuload":{
        "psr-4":{
            "FOO\\":"src/"
     }
  }
}
Copy after login

当在index.php中new FOO\A\A 这个类时。composer会去查找src/A/A.php.如果这位文件存在,则进行加载

2.PSR-0

在composer.json中是这样配置的

{
  "aotuload":{
        "psr-0":{
            "FOO\\":"src/"
     }
  }
}
Copy after login

当在index.php中new FOO\A\A 这个类时。composer会去查找src/FOO/A/A.php.如果这位文件存在,则进行加载

3.class-map

{
  "aotuload":{
       "class-map":['a/','b/','c/']
    }
}
Copy after login

composer 会扫描abc 目录下以.php或.inc结尾的class.并生产新的文件映射关系,放到/vendor/composer/aotuload_classmap

4.files

{
   "aotuload":{
       "files":["src/my/function.php"]
 }
}
Copy after login

手动指定供提供加载的文件。如全局的function文件

The above is the detailed content of Introducing four methods of composer automatic loading. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Laravel Introduction Example Laravel Introduction Example Apr 18, 2025 pm 12:45 PM

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

Use Composer to solve the dilemma of recommendation systems: andres-montanez/recommendations-bundle Use Composer to solve the dilemma of recommendation systems: andres-montanez/recommendations-bundle Apr 18, 2025 am 11:48 AM

When developing an e-commerce website, I encountered a difficult problem: how to provide users with personalized product recommendations. Initially, I tried some simple recommendation algorithms, but the results were not ideal, and user satisfaction was also affected. In order to improve the accuracy and efficiency of the recommendation system, I decided to adopt a more professional solution. Finally, I installed andres-montanez/recommendations-bundle through Composer, which not only solved my problem, but also greatly improved the performance of the recommendation system. You can learn composer through the following address:

Solve caching issues in Craft CMS: Using wiejeben/craft-laravel-mix plug-in Solve caching issues in Craft CMS: Using wiejeben/craft-laravel-mix plug-in Apr 18, 2025 am 09:24 AM

When developing websites using CraftCMS, you often encounter resource file caching problems, especially when you frequently update CSS and JavaScript files, old versions of files may still be cached by the browser, causing users to not see the latest changes in time. This problem not only affects the user experience, but also increases the difficulty of development and debugging. Recently, I encountered similar troubles in my project, and after some exploration, I found the plugin wiejeben/craft-laravel-mix, which perfectly solved my caching problem.

Laravel framework installation method Laravel framework installation method Apr 18, 2025 pm 12:54 PM

Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

How to view the version number of laravel? How to view the version number of laravel How to view the version number of laravel? How to view the version number of laravel Apr 18, 2025 pm 01:00 PM

The Laravel framework has built-in methods to easily view its version number to meet the different needs of developers. This article will explore these methods, including using the Composer command line tool, accessing .env files, or obtaining version information through PHP code. These methods are essential for maintaining and managing versioning of Laravel applications.

How to simplify email marketing with Composer: DUWA.io's application practices How to simplify email marketing with Composer: DUWA.io's application practices Apr 18, 2025 am 11:27 AM

I'm having a tricky problem when doing a mail marketing campaign: how to efficiently create and send mail in HTML format. The traditional approach is to write code manually and send emails using an SMTP server, but this is not only time consuming, but also error-prone. After trying multiple solutions, I discovered DUWA.io, a simple and easy-to-use RESTAPI that helps me create and send HTML mail quickly. To further simplify the development process, I decided to use Composer to install and manage DUWA.io's PHP library - captaindoe/duwa.

Using Dicr/Yii2-Google to integrate Google API in YII2 Using Dicr/Yii2-Google to integrate Google API in YII2 Apr 18, 2025 am 11:54 AM

VprocesserazrabotkiveB-enclosed, Мнепришлостольностьсясзадачейтерациигооглапидляпапакробоглесхетсigootrive. LEAVALLYSUMBALLANCEFRIABLANCEFAUMDOPTOMATIFICATION, ČtookazaLovnetakProsto, Kakaožidal.Posenesko

How to simplify CMS development with Composer: Practical application of the Lebenlabs/SimpleCMS library How to simplify CMS development with Composer: Practical application of the Lebenlabs/SimpleCMS library Apr 18, 2025 am 09:45 AM

When developing a new content management system (CMS), I encountered a common but difficult problem: how to quickly build a fully functional CMS without adding too much complexity. There are many ready-made CMS solutions available on the market, but they are often too large and complex to configure and can be a burden for small projects. After some exploration, I discovered the lebenlabs/simplecms library, which provides a simple and efficient solution through Composer.

See all articles