/** * @param \Tripod\ExtendedGraph $graph * @param string $format * @return string */ function getFormattedGraph(\Tripod\ExtendedGraph $graph, $format) { switch ($format) { case FORMAT_RDF_XML: $output = $graph->to_rdfxml(); break; case FORMAT_NTRIPLES: $output = $graph->to_ntriples(); break; case FORMAT_TURTLE: $output = $graph->to_turtle(); break; default: $output = $graph->to_json(); } return $output; }