How to use Composer to manage dependent libraries

Editor to share with you how to use Composer to manage dependent libraries. I hope you will get something after reading this article. Let's discuss it together.

Brief introduction

Composer is a dependency management tool for PHP. The advantage of Composer is that you only need to provide a composer.json file to declare the dependent libraries you need, and then you can install all the dependencies with a simple command, which facilitates the deployment and release of the application, and bid farewell to the trouble of manual download management.

Installation

Linux

You can execute the following commands to install Composer on your system.

$curl-sS https://getcomposer.org/installer | php$ mv composer.phar / usr/local/bin/composer

Notes

If the above command fails because of permissions, use sudo to try running the mv line again.

Windows

Download and run Composer-Setup.exe, which will install the latest version of Composer and set the system's environment variables, so you can use the composer command directly from any directory.

Use

After installation, Composer adds a composer command to the system, which is the entrance to all the administrative functions of Composer.

You can directly use the composer require command to install third-party libraries and add dependencies to the composer.json description file.

$composer require monolog/monolog

Composer installs all dependent packages into the application's vendor directory. In addition to downloading the library, Composer also prepares an auto-load file that can load all the class files in the library downloaded by Composer. To use it, you only need to add the following line of code to your application's boot file to use these libraries.

Require 'vendor/autoload.php'

In addition, you can search https://packagist.org/ for the library you want and use Composer to install it.

After reading this article, I believe you have some understanding of "how to use Composer to manage dependency libraries". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!