链接：

https://developer.aliyun.com/composer

全局使用：

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

取消配置：

composer config -g –unset repos.packagist

 

项目使用：

composer config repo.packagist composer https://mirrors.aliyun.com/composer/

取消配置：

composer config –unset repos.packagist