Net_WebFinger

WebFinger client library for PHP.

Discover meta data about users by just their email address. Discoverable data may be the user's OpenID, profile page URL, link to portable contacts, hcard, foaf and other user pages.

Distributed social networks use WebFinger to distribute public encryption keys, OStatus and Salmon URLs.

Net_WebFinger supports draft-ietf-appsawg-webfinger-13 and can fall back to RFC 6415 (host-meta + lrdd).