public function lbt() {                  $ajax = input::get('ajax','');          if($ajax == '1'){               if(!empty($_FILES)){                   $fileDir = public_path().'/test/';                  $newFile = $fileDir.$_FILES["myfile"]["name"];                  $info = pathinfo($newFile);                  $type =  isset($info['extension']) ? $info['extension'] : false;                  $allowFiles = array('jpg', 'png', 'gif', 'mp3', 'mp4', 'wav', 'flv');                  if(!$type || !in_array($type, $allowFiles)){                      echo '文件拓展名不对';                  }                  if($_FILES["myfile"]["error"] == 0){                       move_uploaded_file($_FILES["myfile"]["tmp_name"], $newFile);                   }                   $data['url'] = url('test/'.$_FILES['myfile']['name']);                  $imgModel = new ImgModel();                  $imgModel->img_name = Input::get('name','');                  $imgModel->img_path = $_FILES['myfile']['name'];                  $imgModel->img_content = '';                  $imgModel->save();                             }