Composer create local package - php

Question

In my project inside the vendor directory I created a new directory named Hello and created a new class HelloWorld.php with the namespace Hello\Test. Then in the root of Hello I created a composer.json with default meta data (author, license, desc, required), and added autoload PSR-4 Hello\\Test\\.
So what do I need to do next to autoload my package. I looked at some Symfony components and their composer.json package and configuration is the same.
Is it possible to autoload my local package from vendor like this?
Dir structure:
|-my_project
|-composer.json
|---vendor
|-------composer
|-------autoload.php
|-------Hello
|-----------composer.json
|-----------HelloWorld.php
./vendor/Hello/composer.json
{
"name": "Zend/Hello",
"description": "My test package",
"license": "MIT",
"authors": [
{
"name": "Zend Zend",
"email": "test#example.com"
}
],
"autoload": {
"psr-4": {
"Hello\\Test\\": ""
}
}
}
My HelloWorld.php class has namespace Hello\Test;
Inside index.php i do include 'vendor/autoload.php
And root composer.json
{
"autoload": {
"psr-4": {
"": "src/",
"Hello\\Test\\": "./vendor/Hello"
}
},
"require": {
"Hello/Test": "*"
}
}
composer update

Answer 1

Okay! Sorry for the late reply.
You only need one composer.json to make this work. The one in your main project directory.
Try using this:
{
"name": "Zend/Hello",
"description": "My test package",
"license": "MIT",
"authors": [
{
"name": "Zend Zend",
"email": "test#example.com"
}
],
"autoload": {
"psr-4": {
"Hello\\Test\\": "vendor/Hello"
}
}
}
And your HelloWorld.php file should be like:
<?php
namespace Hello\Test;
class HelloWorld {
// your methods goes here
}
Run a composer self update to get the latest composer the run composer update and it should now be added to your vendor/composer/autoload_psr4.php file