在为Composer创建包时，如何加载依赖项？

Question

I've made packages for NPM and I know the drill there. You simply list your dependencies and then require() them. Node searches node_modules, finds the package, loads it and you're good to go.

How does that work in PHP, though? My dependency is PoParser. I know I can just do:

require __DIR__ . '/vendor/autoload.php';

But when I publish my package, I wouldn't publish the third party dependency code, right? My package should only contain my code. At least that's the case with NPM.

So if I don't have that vendor folder when I publish my thing. How would I require my dependency? In Node, require() does that hard work. How would I do it here?

Here's my folder structure, if that helps:

vendor
    /composer
        ...
    /sepia
        /po-parser
            ...
            /src
                /Sepia
                ...
                // dependency classes
                ...
            ...
    autoload.php
composer.json
composer.lock
MyThing.class.php
Other.class.php

Answer 1

Composer will handle that for you. Put your dependencies inside the composer.json file and when you require your project it will download the dependencies too.

Take a look at this tutorial: https://dev.to/ahmedkhan/smart-guide-on-creating-a-complete-php-package-using-composer