ct as $key=>$value){ if($key < 3){ $category[] = $value->category->name; } } return [ 'id' => $topic['id'], 'name' => $topic['name'], 'img' => $topic['img'], 'is_suggest' => $topic['is_suggest'], 'is_hot' => $topic['is_hot'], 'is_open' => $topic['is_open'], 'desc' => $topic['desc'], 'post_count' => $topic['use_count'], 'follow_count' => $topic['follow_count'], 'page_count' => $topic['pv'], 'created_at' => Carbon::parse($topic['created_at'])->toDateTimeString(), 'category_list'=>$category, ]; } }