优化分页

application/api/controller/Product.php

@@ -35,10 +35,10 @@ class Product extends Api
         }
         $params = Request::instance()->param();
         $limit = $params['limit'];
-        if (!isset($limit) == false){
+        if (!isset($limit)){
             $limit = 15;
         }
-        if (!isset($pages) == false){
+        if (!isset($pages)){
             $pages = 0;
         }else{
             $pages = ($params['page']-1) * $limit;