edit

app/collection/lib/Info.php

@@ -28,6 +28,10 @@ class Info
             $data['num_buy'] = Dever::load('user/lib/collection')->getNum($data['id']);
         }
 
+        if (!$data['num_buy']) {
+            $data['num_buy'] = 0;
+        }
+
         if (isset($data['num_add_buy']) && isset($data['num_ratio_buy'])) {
             $data['num_buy_total'] = round(($data['num_buy']+$data['num_add_buy'])*$data['num_ratio_buy']);
         }

app/collection/lib/Manage.php

@@ -30,12 +30,14 @@ class Manage
         $html = '《' . $cate['name'] . '》<br />';
 
         if ($data['buy'] == 1) {
+            $name = '购买数';
             $html .= '<font style="color:red">收费</font><br />';
         } else {
+            $name = '阅读人数';
             $html .= '<font style="color:blue">免费</font><br />';
         }
         
-        $html .= '购买数：('.$data['num_buy'].'+'.$data['num_add_buy'].')*'.$data['num_ratio_buy'].'='.$data['num_buy_total'];
+        $html .= $name . '：('.$data['num_buy'].'+'.$data['num_add_buy'].')*'.$data['num_ratio_buy'].'='.$data['num_buy_total'];
 
         
         $html .= '<br />阅读数：'.$data['num_view'].'+'.$data['num_add_view'].'='.$data['num_view_total'];