Modular Programming with PHP 7

Understanding Composer

Composer is a dependency management tool for PHP. By default, it does not install anything global but rather on a per-project basis. We can use it to redistribute our project in order to define which libraries and packages it needs for it to be successfully executed. Using Composer is quite simple. All it creating is to create a composer.json file in the root directory of our project with similar content, as follows:

{
"require": {
"twig/twig": "~1.0"
    }
}

If we were to create the preceding composer.json file in some empty directory and execute the composer install command within that directory, Composer will pickup the composer.json file and install the defined dependencies for our project. The actual install action implies ...