if (sizeof($Keywords) > 1) {
$query = $prefixs . $sparql->getArticlesByKeywords($Keywords, $title);
$response = $http->sparqlQuery($query);
$json = json_decode($response, true);
$ArticlesByKeywords = $json["results"]["bindings"];
$id = 1;
// per ogni articolo estrae titolo,id, insieme di keyword in comune e insieme di topic in comune, crea un oggetto e lo inserisce in un array di articoli
if (sizeof($ArticlesByKeywords) > 1) {
foreach ($ArticlesByKeywords as $t) {
$arrayKeyword = array();
$arrayTopic = array();
$art[$t["title_value"]["value"]] = new Article();
$art[$t["title_value"]["value"]]->setId($t["title_value"]["value"]);
$art[$t["title_value"]["value"]]->setTitle($t["title_value"]["value"]);
$id++;
$query = $prefixs . $sparql->getEqualsKeywordByArticle($t["title_value"]["value"], $Keywords);
$response = $http->sparqlQuery($query);
$json = json_decode($response, true);
$equalsKeywords = $json["results"]["bindings"];
if (sizeof($equalsKeywords) > 0) {
foreach ($equalsKeywords as $ek) {
$arrayKeyword[$ek["t"]["value"]] = $ek["r"]["value"];
}
}
if (sizeof($topics) > 0) {
$query = $prefixs . $sparql->getEqualsTopicByArticle($t["title_value"]["value"], $topics);
$response = $http->sparqlQuery($query);
$json = json_decode($response, true);
$equalsTopics = $json["results"]["bindings"];
foreach ($equalsTopics as $top) {
array_push($arrayTopic, $top["topicValue"]["value"]);