$row['DATE'] , "y1" => $row['BOILER1SF']); array_push($data_points, $point); } while($row = mysqli_fetch_array($result2)) { $point = array("label" => $row['DATE'] , "y2" => $row['BOILER2SF']); array_push($data_points, $point); } echo json_encode($data_points, JSON_NUMERIC_CHECK); } mysqli_close($con); ?>