Composer 作为依赖包管理工具
使用前请确保您已安装PHP 和 Composer
aliyun https://mirrors.aliyun.com/composer/ 推荐
tencent https://mirrors.cloud.tencent.com/composer/
huaweicloud https://mirrors.huaweicloud.com/repository/php/
cnpkg.org https://php.cnpkg.org
laravel-china https://packagist.laravel-china.org
打开终端并执行如下命令：
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
// OR
composer config -g repo.packagist composer https://mirrors.huaweicloud.com/repository/php/
打开终端，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://mirrors.aliyun.com/composer/
// OR
composer config repo.packagist composer https://mirrors.huaweicloud.com/repository/php/
您也可以手工在composer.json中添加如下内容：
"repositories": {"packagist": {"type":"composer","url":"https://mirrors.aliyun.com/composer/"}}
PHP官方地址：http://php.net/
Composer官方地址：https://getcomposer.org/
