source: php/trunk/samples/rdfa_serialize/sample.php

<?PHP

/* RDFInt.php - RDF Interfaces for PHP
 * Copyright 2011 netlabs.org
 * Author: Christian Langanke, Adrian Gschwend
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// load library setup
require_once( '../sample_config.php');
define( 'RDFINT', getenv( 'PHP_LIBROOT_RDFINT'));
require_once( RDFINT.'/rdfa.php');

$debugger = \fDebug::getInstance();
const debugcontext = "RDFA_SAMPLE";

$turtlefile = "sample.ttl";

// ---------------------------------------------------------------

$aNamespace = array( 'rdf'      => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
                     'foaf'     => 'http://xmlns.com/foaf/0.1/',
                     'resource' => 'http://data.uduvudu.org/resource/');

// setup data RDF object
$rdfaData = new \rdfa\Data();

// setup namespace mappings
foreach ( $aNamespace as $prefix => $uriNamespace) {
  $rdfaData->setMapping( $prefix, $uriNamespace);
}

// parse data
$rdfaData->parse( $turtlefile);

$validTypes = array( 'application/rdf+xml', // same as 'application/rdfxml'
                     'text/turtle',
                     'application/x-turtle',
                     'text/n3',
                     'application/json');

// these call must return a proper serialization
foreach ( $validTypes as $type) {
  $doc = $rdfaData->_serialize( $type);
  $debugger->sendMessage( "Serialized as $type\n$doc", debugcontext);
}

?>