原文链接 https://blog.withme.top/p/813ae496-05ad-4bff-917d-7f2fa3516e24 
summary
php is a popular language for website.Many hosting provider provides cheap php server because their cost is also cheap.We can use these php server as a storage server.What protocol we can use?I find webdav is the most easy.And there is ready-made library for us to use.That is https://github.com/sabre-io/dav Now I tell you...