[基础](../composer/%E5%9F%BA%E7%A1%80.md) [常用的包](../%E5%B8%B8%E7%94%A8%E7%9A%84%E5%8C%85.md) [guzzle](../composer/guzzle.md) [二维码](../composer/%E4%BA%8C%E7%BB%B4%E7%A0%81.md)