数组转字符窜

app-hd/controllers/MtController.php

@@ -177,7 +177,7 @@ class MtController extends PublicController
                             }
                         }
                         $hasGoods->cover = $currentCover;
-                        $hasGoods->shopImg = $shopImg;
+                        $hasGoods->shopImg = json_encode($shopImg);
                         Yii::$app->redis->executeCommand('SET', ['mt_goods_spu_' . $mtGoodsSpu, md5($imgString)]);
                     }
                     $hasGoods->name = $goodsName;