Classes in ZItem are meant to help work with the Zotero items that appear in the ATOM response. (See http://www.zotero.org/support/dev/server_api) Part of the goal is to make them work well in conjunction with Jeremy Boggs' phpZotero class http://github.com/clioweb/phpZotero An item can be passed either as a string of XML or as the DOMElement. If you use the ARC framework for RDF (http://arc.semsol.org), the getItemAsRdf method will build BIBO-based rdf for the item phpZoteroEntry Methods: getFields() returns the array of the fields in the form array('fieldName' => 'fieldValue') fieldExists($field) checks if the field exists getFieldValue($field) gets the value of the field getFieldsAsJSON() returns the fields as a JSON object getItemAsJSON() returns all information about the item as a JSON object getItemAsRdf($itemURI, $format) $itemURI is the uri to assign to the item $format is the serialization format for the RDF, one of 'rdf/xml' (default) , 'rdf/json', 'ntriples', 'turtle' phpZoteroEntries: