如何创建一个自己的【Composer/Packagist】包

首先让我们踏着欢快的脚步去Github创建一个新库，这里取名 composer-car，又欢快的将它克隆到本地：

$ git clone git@github.com:victorruan/composer-car.git

$ cd composer-car

这个composer-car文件夹就是你的包的根目录了，你只需要记住composer.json在包的哪个目录下面，一般那就是包的根目录了。

现在我们还没有composer.json文件，你可以根据composer文档生成并编辑它，当然composer贴心的为我们准备了命令行，look：

$ composer init

  Welcome to the Composer config generator  

This command will guide you through creating your composer.json config.

Package name (<vendor>/<name>) [root/composer-car]: victorruan/composer-car
Description []: This a demo for build composer packagist .
Author [阮佳佳 <250069802@qq.com>, n to skip]:
Minimum Stability []: dev
Package Type (e.g. library, project, metapackage, composer-plugin) []: library
License []: MIT

Define your dependencies.

Would you like to define your dependencies (require) interactively [yes]? no
Would you like to define your dev dependencies (require-dev) interactively [yes]? no

{
    "name": "victorruan/composer-car",
    "description": "This a demo for build composer packagist .",
    "type": "library",
    "license": "MIT",
    "authors": [
        {
            "name": "阮佳佳",
            "email": "250069802@qq.com"
        }
    ],
    "minimum-stability": "dev",
    "require": {}
}

Do you confirm generation [yes]? yes
Would you like the vendor directory added to your .gitignore [yes]? yes

虽然经过以上的一番挣扎生成了composer.json文件，不过我们还得往里面加点东西。使用你熟悉的编辑器打开composer.json文件修改至如下：

{
    "name": "victorruan/composer-car",
    "description": "This a demo for build composer packagist .",
    "type": "library",
    "license": "MIT",
    "authors": [
        {
            "name": "阮佳佳",
            "email": "250069802@qq.com"
        }
    ],
    "minimum-stability": "dev",
    "require": {
        "php": ">=7.0.0"
    },
    "autoload": {
        "psr-4": {
            "Ford\\Escape\\": "src/Ford/Escape",
            "Ford\\Fusion\\": "src/Ford/Fusion",
            "Ford\\Focus\\": "src/Ford/Focus",
            "Ford\\Fiesta\\": "src/Ford/Fiesta"
        }
    }
}

细心的小伙伴可能已经认出了福特的商标(Ford)，这说明我们都是同道中人，你一定也很喜欢汽车，对吧对吧？