Untitled query #40052

SQL

<?php

class SPARQLQueryDispatcher
{
    private $endpointUrl;

    public function __construct(string $endpointUrl)
    {
        $this->endpointUrl = $endpointUrl;
    }

    public function query(string $sparqlQuery): array
    {

        $opts = [
            'http' => [
                'method' => 'GET',
                'header' => [
                    'Accept: application/sparql-results+json'
                ],
            ],
        ];
        $context = stream_context_create($opts);

        $url = $this->endpointUrl . '?query=' . urlencode($sparqlQuery);
        $response = file_get_contents($url, false, $context);
        return json_decode($response, true);
    }
}

$endpointUrl = 'https://query.wikidata.org/sparql';
$sparqlQueryString = <<< 'SPARQL'
SELECT ?item ?sitelink WHERE {
  ?sitelink schema:about ?item .
  ?sitelink schema:inLanguage "ta" .
  ?sitelink schema:isPartOf <https://ta.wikipedia.org/> .
  FILTER(NOT EXISTS {
    ?item rdfs:label ?lang_label .
    FILTER(LANG(?lang_label) = "ta")
    })
  }
LIMIT 100
SPARQL;

$queryDispatcher = new SPARQLQueryDispatcher($endpointUrl);
$queryResult = $queryDispatcher->query($sparqlQueryString);

var_export($queryResult);
SQL

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