composer 镜像操作以及采用命令 全局配置更换到 阿里镜像 composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/ 取消配置 composer config -g --unset repos.packagist项目配置将当前项目更换到阿里云镜像 composer config repo.packagist composer https://mirrors.aliyun.com/composer/ 取消配置 composer config --unset repos.packagist其他操作更新到最新版本 composer self-update 执行诊断命令 composer diagnose 清除缓存 composer clear 若项目之前已通过其他源安装，则需要更新 composer.lock 文件，执行命令 composer update --lock composer 命令增加 -vvv 可输出详细的信息 composer -vvv require alibabacloud/sdk 查看已安装的包 composer show composer show -t 查找相关的包 composer show 'symfony/*' symfony 为要查找的关键字