使用composer

安装composer

brew install composer

修改源

方法一： 修改 composer 的全局配置文件（推荐方式）
打开命令行窗口（windows用户）或控制台（Linux、Mac 用户）并执行如下命令：

composer config -g repo.packagist composer https://packagist.phpcomposer.com

方法二： 修改当前项目的 composer.json 配置文件：
打开命令行窗口（windows用户）或控制台（Linux、Mac 用户），进入你的项目的根目录（也就是 composer.json 文件所在目录），执行如下命令：

composer config repo.packagist composer https://packagist.phpcomposer.com

上述命令将会在当前项目中的 composer.json 文件的末尾自动添加镜像的配置信息（你也可以自己手工添加）：

"repositories": {
    "packagist": {
        "type": "composer",
        "url": "https://packagist.phpcomposer.com"
    }
}

composer使用

A package-based dependency manager for PHP projects.

- Add a package as a dependency for this project, adding it to `composer.json`:
    composer require user/package-name

- Install all the dependencies in this project's `composer.json`:
    composer install

- Uninstall a package from this project, removing it as a dependency from `composer.json`:
    composer remove user/package-name

- Update all the dependencies in this project's `composer.json`:
    composer update

- Update composer to the latest version:
    composer self-update