prepare("SELECT pdffilename FROM pdfstandards WHERE idstandards = ?"); $query->bind_param("i", $idstandards); $query->execute(); $result = $query->get_result(); while ($row = $result->fetch_assoc()) { $response['files'][] = array( 'filename' => $row['pdffilename'] ); } echo json_encode($response); } else { echo json_encode(array("status" => "error", "message" => "ID non fornito.")); }