修复账单显示错误

application/em/model/EmInvoice.php

@@ -42,10 +42,11 @@ class EmInvoice extends Base
             ->page($Nowpage, $limits)
             ->select()
             ->toarray();
-        dd($data);
-        foreach ($data as &$item){
+         foreach ($data as &$item){
+             if($item['payment_balance'] == '') $item['payment_balance'] = 0;
             $item['paid_amount'] = $item['payment_amount'] - $item['payment_balance'];
             if(is_int($item['settle_amount']) && $item['settle_balance']){
+                if($item['settle_balance'] == '') $item['settle_balance'] = 0;
                 $item['sett_amount'] = $item['settle_amount'] - $item['settle_balance'];
             } else {
                 $item['sett_amount'] = '';