The OSF Web Services PHP API is a framework available to PHP developers to help them generating queries to any OSF Web Service endpoint. Each OSF web service endpoint has its own WebServiceQuery class in the OSF WS PHP API. This class is used to generate any query, to send it to be endpoint of a OSF instance and to get back a resultset. The resultset can then be manipulated by using the Resultset API. This same API can be used to transform the resultset in different formats.