# 用国内镜像 个人推荐 https://pkg.phpcomposer.com ``` $ composer config -g repo.packagist composer https://packagist.phpcomposer.com ``` # 用国外镜像 ``` composer config -g repo.packagist composer https://packagist.org ``` ## 备注 用国内镜像输入用户名和密码会报错，如下所示： C:\xampp\htdocs\laravels>composer updateLoading composer repositories with package information Authentication required (packagist.phpcomposer.com): Username: Password:Invalid credentials for 'https://packagist.phpcomposer.com/packages.json'//后面把https://packagist.phpcomposer.com改成https://https://packagist.org才可以安装依赖成功//目前解决办法：composer config -g repo.packagist composer https://https://packagist.org