Php函数文件上传不´；不行，我怎么能解决这个问题？

我对$\u文件提示有点问题。这段代码我在控制器中使用，用于在用户输入中上载图像

 public function actionAddequipment(){

  $model = new Equipment;
  $model -> equipment_title = $_POST['equipment_title'];
  $model -> equipment_sn = $_POST['equipment_sn'];
  $model -> equipment_type = $_POST['equipment_type'];
  $model -> user_id = $_POST['equipment_user_id'];
  $model -> equipment_utilities = $_POST['equipment_utilities'];
  $model -> equipment_date = date('Y-m-d H:i:s', Time());
  $model -> save();

   if (isset ($_POST['column'])){

     foreach($_POST['column'] as $key => $value){
        $model2 = new EquipmentColumnData;
     $model2 -> equipment_id = $model -> equipment_id;
     $model2 -> equipment_column_id = $key; 
     $model2 -> equipment_column_data_value = $value;
     $model2 -> save();

   }

  if(isset($_FILES)){

    if (!file_exists('../web/uploads/equipments/' . $model->equipment_id))
    mkdir('../web/uploads/equipments/' . $model->equipment_id, 0777,true);
    foreach($_FILES as $key => $value){
    $num=explode( '-', $key ); 
    if (!file_exists('../web/uploads/equipments/' . $model->equipment_id.'/'.$num[1]))
    mkdir('../web/uploads/equipments/' . $model->equipment_id.'/'.$num[1], 0777,true);
    move_uploaded_file($_FILES[$key]['tmp_name'], '../web/uploads/equipments/' . $model->equipment_id.'/'.$num[1]);


  }

  }



   }


}

}

但有一个问题。若我上传图片，一切正常，命令保存，但图片不在我上传他的文件夹中。我怎样才能解决这个问题？

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谢谢你的回答！：）

检查

move\u uploaded\u file

的返回值，因为我打赌它会自动失败并返回一个讨厌的

false

。然后检查文档，学习如何正确处理文件上载。

首先检查文件夹权限。