edit

app/shop/database/buy_stat.php

@@ -163,7 +163,7 @@ return array
             'match'     => 'option',
             'update'    => 'text',
             'list_name' => '毛利',
-            'list'      => '{cash}-{p_cash}',
+            'list'      => 'Dever::load("shop/lib/manage.showCash", "{cash}", "{p_cash}")',
         ),
 
         'state'     => array

app/shop/lib/Manage.php

@@ -6,6 +6,18 @@ use Dever;
 
 class Manage
 {
+    public function showCash($cash, $p_cash)
+    {
+        if (!$cash) {
+            $cash = 0;
+        }
+
+        if (!$p_cash) {
+            $p_cash = 0;
+        }
+
+        return $cash - $p_cash;
+    }
     # 获取用户信息
     public function user($id)
     {