What are the benefits of using Composer and PSR-4 for PHP development?

Composer is a dependency manager for PHP that simplifies the process of managing external libraries and packages in a PHP project. PSR-4 is a PHP Standard Recommendation that defines a common way to autoload classes in a project, making it easier to organize and load classes without the need for manual inclusion. By using Composer with PSR-4, developers can easily manage dependencies and autoload classes in their PHP projects, leading to more efficient and maintainable code.

// composer.json
{
    "autoload": {
        "psr-4": {
            "App\\": "src/"
        }
    }
}