判断condition不为空

@@ -26,6 +26,7 @@ class IndexController extends WebAction
         //获取品牌banner
         $brandBanner = BrandsModel::getBannerByDomain($domain, $brandId, $uid = '');
         /* 过滤请求参数 */
+        $condition = array();
         $condition = filter_input_array(INPUT_GET, array(
             //'query' => FILTER_SANITIZE_STRING,
             'sort' => FILTER_VALIDATE_INT,
@@ -51,8 +52,10 @@ class IndexController extends WebAction
             'page' => FILTER_VALIDATE_INT,), false);
         
         //字符转码
-        foreach ($condition as &$value) {
-            $value = rawurldecode($value);
+        if (!empty($condition)) {
+            foreach ($condition as &$value) {
+                $value = rawurldecode($value);
+            }
         }
         //传品牌ID参数
         $condition['brand'] = $brandId;