symfony/docs/Bundles.md

Bundles

How to Create a bundle

Official Symfony Docs - Create a bundle

mkdir -p lib/bundleName/src touch lib/bundleName/src/bundleName.php

You have to add the namespace\bundle name to config/bundles.php vendorName\bundleName\bundleName::class => ['all' => true],

And you have to auto load the class by adding the next line in composer.json:

"autoload": {
        "psr-4": {
            "vendorName\\bundleName\\": "lib/bundleName/src/",
            "App\\": "src/"
        }
    },

(replace vendorName\bundleName and make sure the directory is correct)

run composer dump-autoload after updating the composer.json