Merge branch 'feature/optimize' into develop

api/controllers/RecommendCoinController.php

@@ -195,6 +195,6 @@ class RecommendCoinController extends BaseController
         }
         $this->data = $coin_trusteeship;
         doEnd :
-        return ['code' => $this->code, 'data' => $this->data, 'msg' => $this->msg, 'count' => count($this->data)];
+        return ['code' => $this->code, 'data' => $this->data, 'msg' => $this->msg, 'count' => empty($this->data) ? 0 : count($this->data)];
     }
 }
\ No newline at end of file