prepare("SELECT * FROM compundsvocabulary WHERE refid = ? AND preferred = 'N'"); $stmt->bind_param('i', $refid); $stmt->execute(); $result = $stmt->get_result(); $data = []; while ($row = $result->fetch_assoc()) { $data[] = $row; } echo json_encode($data); } else { echo json_encode(['success' => false, 'error' => 'Invalid input']); }