56 lines
2.3 KiB
Plaintext
56 lines
2.3 KiB
Plaintext
Introduction
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------------
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JSON, as specified in RFC4627, is a simple language for representing
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objects on the Web. Linked Data is a way of describing content across
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different documents or Web sites. Web resources are described using
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IRIs, and typically are dereferencable entities that may be used to find
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more information, creating a "Web of Knowledge". JSON-LD is intended to
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be a simple publishing method for expressing not only Linked Data in
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JSON, but for adding semantics to existing JSON.
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This library is an implementation of the JSON-LD specification in PHP.
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JSON-LD is designed as a light-weight syntax that can be used to express
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Linked Data. It is primarily intended to be a way to express Linked Data
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in Javascript and other Web-based programming environments. It is also
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useful when building interoperable Web Services and when storing Linked
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Data in JSON-based document storage engines. It is practical and
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designed to be as simple as possible, utilizing the large number of JSON
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parsers and existing code that is in use today. It is designed to be
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able to express key-value pairs, RDF data, RDFa [RDFA-CORE] data,
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Microformats [MICROFORMATS] data, and Microdata [MICRODATA]. That is, it
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supports every major Web-based structured data model in use today.
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The syntax does not require many applications to change their JSON, but
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easily add meaning by adding context in a way that is either in-band or
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out-of-band. The syntax is designed to not disturb already deployed
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systems running on JSON, but provide a smooth migration path from JSON
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to JSON with added semantics. Finally, the format is intended to be fast
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to parse, fast to generate, stream-based and document-based processing
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compatible, and require a very small memory footprint in order to operate.
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Commercial Support
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------------------
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Commercial support for this library is available upon request from
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Digital Bazaar: support@digitalbazaar.com
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Source
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------
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The source code for the PHP implementation of the JSON-LD processor
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is available at:
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http://github.com/digitalbazaar/php-json-ld
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To run the tests, checkout:
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http://github.com/digitalbazaar/jsonld.js
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And create a symbolic link called 'tests' in your php-json-ld
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directory to the 'tests/jsonld' directory in your jsonld.js
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directory. Then run:
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php jsonld-tests.php
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