Linux Composer安裝，配置國內鏡像

安裝 Composer

wget https://dl.laravel-china.org/composer.phar -O /usr/local/bin/composer
chmod a+x /usr/local/bin/composer

Composer 鏡像加速

1、全局配置

composer config -g repo.packagist composer https://packagist.laravel-china.org

2、局部配置(僅限當前工程使用鏡像，去掉 -g 便可)

composer config repo.packagist composer https://packagist.laravel-china.org

全局配置信息查看， [repositories.packagist.org.url] 表示當前鏡像地址

composer config -gl

取消鏡像

composer config -g --unset repos.packagist

查看當前 composer 版本

composer -v

升級 composer 版本

composer selfupdate