# **安装：** > 前提条件：必须安装Composer ## **更换compoer镜像源** ~~~ composer config -g repo.packagist composer https://packagist.phpcomposer.com ~~~ 或者(阿里云的 Composer 源已经停止维护): ~~~ composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/ ~~~ >[danger] 注意如果切换到非阿里云的镜像还是提示`Warning from https://mirrors.aliyun.com/composer: Support for Composer 1 will be shutdown on August 1st 2025. You should upgrade to Composer 2. See https://blog.packagist.com/shutting-down-packagist-org-support-for-composer-1-x/`则我们可能在某个包里设置了仓库源 ``` { "repositories": [ { "type": "composer", "url": "https://mirrors.aliyun.com/composer/" } ] } ``` **或者华为云（phpstudy环境推荐）** ~~~ composer config -g repos.packagist composer https://repo.huaweicloud.com/repository/php/ ~~~ **或者腾讯云（phpstudy环境推荐）** ~~~ composer config -g repo.packagist composer https://mirrors.cloud.tencent.com/composer/ ~~~ **查看composer的全局配置文件：** ~~~ composer config -l -g ~~~ #### **清除 Composer 缓存** ``` composer clear-cache ```