you only need to implement %GET()%, %PUT()% and %PROPFIND()%. Such a minimal server is not at all compliant to the sepcs but may already work with some clients. you also need %COPY()%, %MOVE()%, %DELETE()% and %PROPPATCH()%. has to implement locking, so you also need %LOCK()%, %UNLOCK()% and %CHECKLOCK()%. as specified in RFC 3253 is beyond the current scope of the this PHP package.