Overview

Composer is a dependency manager for PHP. We can download it from the official website. Composer is licensed under the MIT license.

Official Website: https://getcomposer.org/

 

Download

Download Composer-Setup.exe

 

Save the file on the computer.

 

Install

Double click on the Composer-Setup.exe

Click on the Next buttons and complete the Install wizard.

Click the Finish button to complete the install.

 

Composer will create files to handle the configuration and dependency information.

• composer.json
• composer.lock

The lock file locks the dependencies of your project to a known state of the project.

 

Sample composer.json

{
    "config": {
        "platform": {
            "php": "7.4.2"
        }
    },
    "require": {
        "php-http/guzzle6-adapter": "^1.0",
        "slim/slim": "4.0",
        "slim/psr7": "^1.1",
        "nyholm/psr7": "^1.2",
        "nyholm/psr7-server": "^0.4.1",
        "guzzlehttp/psr7": "^1.6",
        "http-interop/http-factory-guzzle": "^1.0",
        "laminas/laminas-diactoros": "^2.2",
        "adodb/adodb-php": "^5.20",
        "phpmailer/phpmailer": "^6.1",
        "smarty/smarty": "^3.1",
        "psr/log": "^1.1",
        "symfony/polyfill-mbstring": "^1.15",
        "league/oauth2-client": "^2.4",
        "omines/oauth2-gitlab": "^3.2",
        "league/oauth2-github": "^2.0",
        "league/oauth2-google": "^3.0",
        "slim/http": "^1.0"
    }
}

All the dependencies source files would be downloaded into a folder called vendor at the project root folder. The sample folder for the TestLink application is shown below. (https://www.testingdocs.com/testlink-installation-on-windows/)

 

We can use the dependency by loading the autoload.php file. For example

require_once “vendor/autoload.php”

We can use the dependency by importing into the project source. For example,

use Slim\Psr7\Response;