fix bug

app/Model/MediaModel.php

@@ -1039,6 +1039,7 @@ class MediaModel extends Eloquent
 
         $medias = MediaModel::select('_id','media_name')->whereIn('_id',$media_ids)->limit(self::$max_page_size)->get()->toArray();
 
+
         foreach ($medias as $key => &$item){
             $item['forvery_url'] = isset($data[$item['_id']])?$data[$item['_id']]['url']:'';
 
@@ -1046,10 +1047,10 @@ class MediaModel extends Eloquent
             $media_id = $item['_id'];
             $media_num = md5(md5($media_id));
             //生成媒资序列号，生成视频预览链接需要
-            $data = [
+            $tmp = [
                 'media_num'     => $media_num,
             ];
-            MediaModel::where("_id",$media_id)->update($data);
+            MediaModel::where("_id",$media_id)->update($tmp);
 
             $url = getenv('preview_domain')?getenv('preview_domain'):"https://xue.t.eoffcn.com/preview/temp/";