为什么慢
由于默认情况下执行 composer 各种命令是去国外的 composer 官方镜像源获取需要安装的具体软件信息，所以在不使用代理、不翻墙的情况下，从国内访问国外服务器的速度相对比较慢
如何修改镜像源
可以使用阿里巴巴提供的 Composer 全量镜像 mirrors.aliyun.com/composer/
a). 配置只在当前项目生效
composer config repo.packagist composer https://mirrors.aliyun.com/composer/
# 取消当前项目配置
composer config --unset repos.packagist
b). 配置全局生效
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/
# 取消全局配置
composer config -g --unset repos.packagist
c). 使用第三方软件快速修改、切换 composer 镜像源
crm composer registry manager
安装 crm
composer global require slince/composer-registry-manager
列出可用的所有镜像源，前面带 * 代表当前使用的镜像
composer repo:ls
-- --------------- ------------------------------------------------
composer https://packagist.org
phpcomposer https://packagist.phpcomposer.com
aliyun https://mirrors.aliyun.com/composer
tencent https://mirrors.cloud.tencent.com/composer
huawei https://mirrors.huaweicloud.com/repository/php
laravel-china https://packagist.laravel-china.org
cnpkg https://php.cnpkg.org
sjtug https://packagist.mirrors.sjtug.sjtu.edu.cn
-- --------------- ------------------------------------------------
使用 aliyun 镜像源
composer repo:use aliyun
# 执行成功之后会输出类似以下信息
[OK] Use the repository [aliyun] success
再次执行 composer repo:ls 命令，看到前面带 * 的就是当前使用的镜像
composer repo:ls
# 可以看到 aliyun 前面有一个 * 号，代表当前使用的是 aliyun 的源
--- --------------- ------------------------------------------------
composer https://packagist.org
phpcomposer https://packagist.phpcomposer.com
* aliyun https://mirrors.aliyun.com/composer
tencent https://mirrors.cloud.tencent.com/composer
huawei https://mirrors.huaweicloud.com/repository/php
laravel-china https://packagist.laravel-china.org
cnpkg https://php.cnpkg.org
sjtug https://packagist.mirrors.sjtug.sjtu.edu.cn
--- --------------- ------------------------------------------------
更多用法查看 crm GitHub
————————————————
原文作者：z__r
转自链接：https://learnku.com/articles/15977/composer-accelerate-and-modify-mirror-source-in-china
版权声明：著作权归作者所有。商业转载请联系作者获得授权，非商业转载请保留以上作者信息和原文链接。
