= :first_day AND DATE(d.created_at) <= :last_day GROUP BY `date`, d.`maritalStatus` ORDER BY `date` ASC"; $stmt = $con->prepare($sql); $stmt->execute([':first_day' => $first_day_of_month, ':last_day' => $last_day_of_month]); $passenger_data = $stmt->fetchAll(PDO::FETCH_ASSOC); if ($passenger_data) { jsonSuccess($passenger_data); } else { jsonError("No data found"); } ?>