JsonLD is a fully conforming JSON-LD processor written in PHP. It is extensively tested and passes the official JSON-LD test suite.
There's an online playground where you can evaluate the processor's basic functionality.
Additionally to the features defined by the JSON-LD API specification, JsonLD supports framing (including value matching, deep-filtering, aggressive re-embedding, and named graphs) and an experimental object-oriented interface for JSON-LD documents.
The easiest way to use JsonLD is to integrate it as a dependency in your project's composer.json file:
{
"require": {
"ml/json-ld": "1.*"
}
}Installing is then a matter of running composer
php composer.phar install
... and including Composer's autoloader to your project
require('vendor/autoload.php');Of course, you can also download JsonLD as ZIP archive from Github.
JsonLD requires PHP 5.3 or later.
The library supports the official JSON-LD API as well as a object-oriented interface for JSON-LD documents (not fully implemented yet, see issue #15 for details).
All classes are extensively documented. Please have a look at the source code.
// Official JSON-LD API
$expanded = JsonLD::expand('document.jsonld');
$compacted = JsonLD::compact('document.jsonld', 'context.jsonld');
$framed = JsonLD::frame('document.jsonld', 'frame.jsonld');
$flattened = JsonLD::flatten('document.jsonld');
$quads = JsonLD::toRdf('document.jsonld');
// Output the expanded document (pretty print)
print JsonLD::toString($expanded, true);
// Serialize the quads as N-Quads
$nquads = new NQuads();
$serialized = $nquads->serialize($quads);
print $serialized;
// And parse them again to a JSON-LD document
$quads = $nquads->parse($serialized);
$document = JsonLD::fromRdf($quads);
print JsonLD::toString($document, true);
// Node-centric API
$doc = JsonLD::getDocument('document.jsonld');
// get the default graph
$graph = $doc->getGraph();
// get all nodes in the graph
$nodes = $graph->getNodes();
// retrieve a node by ID
$node = $graph->getNode('http://example.com/node1');
// get a property
$node->getProperty('http://example.com/vocab/name');
// add a new blank node to the graph
$newNode = $graph->createNode();
// link the new blank node to the existing node
$node->addPropertyValue('http://example.com/vocab/link', $newNode);
// even reverse properties are supported; this returns $newNode
$node->getReverseProperty('http://example.com/vocab/link');
// serialize the graph and convert it to a string
$serialized = JsonLD::toString($graph->toJsonLd());Commercial support is available on request.
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