alcamo/rdf-literal-serializer

(De)serialization of RDF literals

0.1.0 2026-07-09 14:07 UTC

Requires

• php: 7.3 - 8.5
• alcamo/input-stream: ^0.4
• alcamo/rdf-literal-workbench: ^0.1

Requires (Dev)

• phpunit/phpunit: ^9.5
• squizlabs/php_codesniffer: 3.*

Apache-2.0

• serializer
• RDF
• datatype
• deserializer
• literal

Published on Packagist.org on 2026-07-10 18:25 UTC

README

namespace alcamo\rdf_literal_serializer;

use alcamo\rdf_literal\NonNegativeIntegerLiteral;

include $_composer_autoload_path ?? __DIR__ . '/../vendor/autoload.php';

$serializer = AbstractSerializer::createFromProps(
    [
        'class'       => NonNegativeIntegerSerializer::class,
        'encoding'    => 'EBCDIC',
        'lengthRange' => [ 6, null ]
    ]
);

$literal1 = new NonNegativeIntegerLiteral(123);

$serialization = $serializer->serialize($literal1);

echo "Hexdump of EBCDIC: " . bin2hex($serialization) . PHP_EOL;

$literal2 = $serializer->deserialize($serialization);

echo "Deserialized to: $literal2" . PHP_EOL;

This example is contained in this package as a file in the bin directory. It will output

Hexdump of EBCDIC: f0f0f0f1f2f3
Deserialized to: 123

The purpose of this package is to provide configurable (de)serialization of RDF literal objects (see alcamo/rdf-literal). Most serialization methods are rather trivial as such; the added value is the fact that the serialization parameters are completely configurable. As in the above example, in most cases at least the following are configurable:

• The serializer class - the right class depends on the dataype of the literal.
• The encoding.
• The length of the output.

See the doxygen documentation for details.