消息:未定义变量:CODEIGNITER 中的 beauty_detail

Message: Undefined variable: beauty_detail in CODEIGNITER

我有一个表单,用户可以在其中 select bookbeauty 单选按钮。代码在 book 上运行良好,但在 beauty 上显示错误。除了从数据库中获取的数据不同外,代码是相同的。我试过了,但还是卡住了。

错误 A PHP Error was encountered Severity: Notice Message: Undefined variable: beauty_detail Filename: controllers/Welcome.php Line Number: 87

        if($result == 0){
            echo "no recommendation";
        } else{

            foreach($result as $key=>$value){
                $q = $this->mymodel->fetchBeautydetail($key);
                foreach($q as $val){

                    $beauty_detail[$val->user_id]['product_id'] = $val->product_id; 
                    $beauty_detail[$val->user_id]['product_rating'] = $val->rating;
                }
            }
(line number: 87) $this->load->view('beauty_dashboard', ['beauty_detail'=>$beauty_detail]);
        }

问题是 scope

试试看。 (从 foreach 中声明 beauty_detail

$beauty_detail;
foreach($result as $key=>$value){
                $q = $this->mymodel->fetchBeautydetail($key);
                foreach($q as $val){

                    $beauty_detail[$val->user_id]['product_id'] = $val->product_id; 
                    $beauty_detail[$val->user_id]['product_rating'] = $val->rating;
                }
            }
$this->load->view('beauty_dashboard', ['beauty_detail'=>$beauty_detail]);
        }