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vendor/ml/json-ld/README.md

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+JsonLD [![Continuous integration](https://github.com/lanthaler/JsonLD/actions/workflows/ci.yaml/badge.svg)](https://github.com/lanthaler/JsonLD/actions/workflows/ci.yaml)
+==============
+
+JsonLD is a fully conforming [JSON-LD](http://www.w3.org/TR/json-ld/)
+processor written in PHP. It is extensively tested and passes the
+[official JSON-LD test suite](https://github.com/json-ld/tests).
+
+There's an [online playground](http://www.markus-lanthaler.com/jsonld/playground/)
+where you can evaluate the processor's basic functionality.
+
+Additionally to the features defined by the [JSON-LD API specification](http://www.w3.org/TR/json-ld-api/),
+JsonLD supports [framing](http://json-ld.org/spec/latest/json-ld-framing/)
+(including [value matching](https://github.com/json-ld/json-ld.org/issues/110),
+[deep-filtering](https://github.com/json-ld/json-ld.org/issues/110),
+[aggressive re-embedding](https://github.com/json-ld/json-ld.org/issues/119), and
+[named graphs](https://github.com/json-ld/json-ld.org/issues/118)) and an experimental
+[object-oriented interface for JSON-LD documents](https://github.com/lanthaler/JsonLD/issues/15).
+
+
+Installation
+------------
+
+The easiest way to install `JsonLD` is by requiring it with [Composer](https://getcomposer.org/).
+
+```
+composer require ml/json-ld
+```
+
+... and including Composer's autoloader to your project
+
+```php
+require('vendor/autoload.php');
+```
+
+Of course, you can also download JsonLD as
+[ZIP archive](https://github.com/lanthaler/JsonLD/releases) from Github.
+
+JsonLD requires PHP 5.3 or later.
+
+
+Usage
+------------
+
+The library supports the official [JSON-LD API](http://www.w3.org/TR/json-ld-api/) as
+well as a object-oriented interface for JSON-LD documents (not fully implemented yet,
+see [issue #15](https://github.com/lanthaler/JsonLD/issues/15) for details).
+
+All classes are extensively documented. Please have a look at the source code.
+
+```php
+// 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
+------------
+
+Commercial support is available on request.