This document outlines how to create a composer package for managing PHP dependencies. It discusses adding dependencies using composer, creating the package directory structure with src and tests folders, defining a Hello class in the src folder, writing tests for the Hello class in the tests folder, adding autoloading to the composer.json file, pushing the package to Git and releasing it on Packagist, and using the package by requiring it in another project's composer.json file. It also mentions setting up continuous integration for the package.

1. Create your own composer package

2. Why
• Easy to manage dependencies
• Easy to use with 3rd party library

3. normally `require`
<?php
require_once ‘pantip/pantip.class.php’;
require_once ‘twitter/twitter.class.php’;
require_once ‘facebook/facebook.class.php’;
require_once ‘instagram/instagram.class.php’;

4. the composer way
<?php
require_once ‘vendor/autoload.php’;

5. Create Package
$ composer init
// composer.json
{
"name": “clozed2u/hello-composer",
"authors": [
{
"name": "Lattapon Yodsuwan",
"email": "i@clozed2u.com"
}
],
"require": {}
}

6. Directory Structure
hello-composer
|
|__src
| |__Hello.php
|
|__tests
| |__HelloTest.php
|
|__composer.json
|
|__optional(circle.yml, .travis.yml, phpunit.xml)

7. Hello class
<?php
namespace Hello;
class Hello
{
public function sayAnything($message) {
return $message;
}
}

8. Hello Tests
<?php
use HelloHello;
class HelloTest extends PHPUnit_Framework_TestCase
{
public function testSayAnything() {
$said = new Hello();
$this->assertEquals(
"X JAPAN ROCK!!”,
$said->sayAnything("X JAPAN ROCK!!”)
);
}
}

9. Add autoload to composer
// composer.json
{
…,
"require-dev": {
"phpunit/phpunit": "*"
},
"autoload": {
"psr-4": {"Hello": "src/"}
}
}

10. Push to git and release

11. Use package
$ composer install
// composer.json
{
"repositories": [
{
"type": "vcs",
"url": "https://github.com/clozed2u/hello-composer.git"
}
],
"require": {
"clozed2u/hello-composer": "1.0.0"
}
}

12. Push to packagist.org
$ composer require clozed2u/hello-composer

13. Don’t forget continuous integration

14. /clozed2u/hello-composer

15. Me
Name: Lattapon Yodsuwan
Github/Twitter: @clozed2u
Email: i@clozed2u.com

16. We are hiring