private function get_payment_data($start, $end, $me)
 {
     $payment_service = new Payment();
     $payments = $payment_service->get_payment_by_owner($start, $end, $me);
     $ok = $invoice = $payment_rmb = 0;
     $total = count($payments);
     foreach ($payments as $key => $values) {
         foreach ($values as $payment) {
             $ok += $payment['payment'];
             $invoice += $payment['invoice'];
             $payment_rmb += $payment['rmb'];
         }
     }
     return array($ok, $total, $invoice, $payment_rmb);
 }