examples/serialise.php

<?php
/**
 * Basic serialisation example
 *
 * This example create a simple FOAF graph in memory and then
 * serialises it to the page in the format of choice.
 *
 * @copyright  Copyright (c) 2009-2014 Nicholas J Humfrey
 * @license    http://unlicense.org/
 */
require_once realpath(__DIR__.'/..').'/vendor/autoload.php';

$graph = new EasyRdf\Graph();
$me = $graph->resource('http://www.example.com/joe#me', 'foaf:Person');
$me->set('foaf:name', 'Joseph Bloggs');
$me->set('foaf:title', 'Mr');
$me->set('foaf:nick', 'Joe');
$me->add('foaf:homepage', $graph->resource('http://example.com/joe/'));

// I made these up; they are not officially part of FOAF
$me->set('foaf:dateOfBirth', new EasyRdf\Literal\Date('1980-09-08'));
$me->set('foaf:height', 1.82);

$project = $graph->newBnode('foaf:Project');
$project->set('foaf:name', "Joe's current project");
$me->set('foaf:currentProject', $project);

if (isset($_REQUEST['format'])) {
    $format = preg_replace('/[^\w\-]+/', '', strtolower($_REQUEST['format']));
} else {
    $format = 'ntriples';
}
?>
<html>
<head><title>EasyRdf Serialiser Example</title></head>
<body>
<h1>EasyRdf Serialiser Example</h1>

<ul>
<?php
        foreach (EasyRdf\Format::getFormats() as $f) {
            if ($f->getSerialiserClass()) {
                if ($f->getName() == $format) {
                    echo '<li><b>'.$f->getLabel()."</b></li>\n";
                } else {
                    echo "<li><a href='?format=$f'>";
                    echo $f->getLabel()."</a></li>\n";
                }
            }
        }
?>
</ul>

<pre style="margin: 0.5em; padding:0.5em; background-color:#eee; border:dashed 1px grey;">
<?php
    $data = $graph->serialise($format);
if (!is_scalar($data)) {
    $data = var_export($data, true);
}
echo htmlspecialchars($data);
?>
</pre>

</body>
</html>