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+---
+category: help
+layout: help
+mirrorid: packagist
+---
+
+## PHP 包仓库 Packagist 索引镜像使用帮助
+
+执行以下命令即可将 Composer 默认仓库设置为本站：
+
+```
+composer config -g repos.packagist composer https://mirrors.tuna.tsinghua.edu.cn/packagist/index
+```
+
+该镜像只包含包索引，不含包的内容，主要目的是加快 composer 读取软件包索引的速度。