Raffles is a simple file-based RDF/Graph datastore written in PHP. It is written as a way to dynamically publish small datasets easily on PHP web hosting without using an external database.
composer create-project kwijibo/raffles raffles
see Composer
require 'Raffles/lib/rafflesstore.php';
require_once 'Raffles/vendor/autoload.php';
$data_dir = __DIR__ . '/data';
$store = new RafflesStore($data_dir);
$store->indexPredicates = array(
'http://www.w3.org/1999/02/22-rdf-syntax-ns#type',
'http://purl.org/dc/terms/creator',
'http://purl.org/dc/terms/date',
);
// you can configure Raffles to only index specific predicates
$store->addNamespacePrefix('library', 'http://purl.org/library/');
// add prefixes you want to use in queries
$types = $store->getTypes();
// array(
// http://schema.org/Place => 321,
// http://schema.org/Person => 456,
//)
$dates = $store->getFacets('http://purl.org/dc/terms/date');
// array ( "1560" => 4, "1562" => 12, "1570" => 31 )
rdf:type=foaf:Person (all things of type Person)
foaf:made/dct:date=1780 (anyone who made something in 1780)
$limit=20;
$offset=0;
$results = $store->query("foaf:made/dct:date=1560", $limit, $offset);
Results are returned as a PHP associative array following the RDF JSON structure
array (
S => array(
P => array (
array(
value => O,
type => literal|uri|bnode
[, lang=O_LANG ]
[, datatype=O_DATATYPE ]
)
)
)
$results = $store->search("Edinbu");
php specs/run.php
This code is Public Domain. Use, copy, or change it freely, at your own risk.