public function awb_get() {
        $id = $this->get('tracking_number');
        $res= array(
          $this->M_tarif->tampil_status_inbound($id),
          $this->M_tarif->tampil_status_otboundbag($id),
          $this->M_tarif->tampil_status_otboundori($id),
          $this->M_tarif->tampil_status_indes($id),
          $this->M_tarif->tampil_status_outdes($id),
          $this->M_tarif->tampil_status_runsheet($id),
          $this->M_tarif->tampil_db_service_status($id)
        );

$result = str_replace(array('[',']','\n'), '',htmlspecialchars(json_encode($res), ENT_NOQUOTES));
$str = preg_replace('/\\\"/',"\"", $result);
$json = '[';
$json .= substr($str, 2,-1); // Substring -1 character from the end of the json variable, this will be the trailing comma.
$json .= ']';
$jsonData = preg_replace("/,(?!.*,)/", "", $json);
$this->response(json_decode($jsonData), 200);

}

THIS OUTPUT JSON
"[id_service\":\"3\",\"reference_number\":\"\",\"tracking_number\":\"RJC-0000-0001\",\"kd_inbound\":\"INB-1000-0001\",\"tgl_inbound\":\"2019-11-08 00:00:00\",\"status_inb\":\"1\"},{\"id_service\":\"3\",\"reference_number\":\"\",\"kd_outbag\":\"BAG-1468-0001\",\"tanggal_outbag\":\"2019-11-08 00:00:00\",\"status_outbag\":\"1\"},{\"id_service\":\"3\",\"reference_number\":\"\",\"kd_outbound\":\"OTB-1826-0001\",\"tgl_outbound\":\"2019-11-08 14:04:00\",\"status_otb\":\"1\"},{\"id_service\":\"3\",\"reference_number\":\"\",\"tracking_number\":\"RJC-0000-0001\",\"kd_indes\":\"INB-DES-56730001\",\"tgl_indes\":\"2019-11-08 14:07:30\",\"status_indes\":\"1\"},,,{\"id_service\":\"3\",\"reference_number\":\"\",\"tracking_number\":\"RJC-0000-0001\",\"tgl_status\":\"2019-11-07 17:06:43\",\"status\":\"Consignee Unknown\"},{\"id_service\":\"3\",\"reference_number\":\"\",\"tracking_number\":\"RJC-0000-0001\",\"tgl_status\":\"2019-11-08 10:29:07\"\"status\":\"Closed\"]"