tp3.2上傳圖片生成縮略圖

//引入
use think\Image;

/*
   * $name為表單上傳的name值
   * $filePath為為保存在入口文件夾public下面uploads/下面的文件夾名稱，沒有的話會自動創建
   * $width指定縮略寬度
   * $height指定縮略高度
   * 自動生成的縮略圖保存在$filePath文件夾下面的thumb文件夾里，自動創建
   * @return array 一個是圖片路徑，一個是縮略圖路徑，如下：
   * array(2) {
     ["filepath"] => string(57) "uploads/img/20171211\3d4ca4098a8fb0f90e5f53fd7cd71535.jpg"
     ["thumbimgpath"] => string(63) "uploads/img/thumb/20171211/3d4ca4098a8fb0f90e5f53fd7cd71535.jpg"
    }
   */
  protected function uploadFile($name,$filePath,$width = 0,$height = 0)
  {
    $file = request()->file($name);
    if($file){
      $filePaths = ROOT_PATH . 'public' . DS . 'uploads' . DS . $filePath;
            if (!file_exists($filePaths)) {
                mkdir($filePaths, 0777, true);
            }
            $info = $file->move($filePaths);
            if ($info) {
                $imgpath = $filePaths . '/' . $info->getSaveName();
                $url_path = '/uploads/'. $filePath . '/' . $info->getSaveName();
                $image = \think\Image::open($imgpath);
                $date_path = $filePaths . '/thumb/' . date('Ymd');
                $thumb_url = '/uploads/'. $filePath .'/thumb/' . date('Ymd');
                if (!file_exists($date_path)) {
                    mkdir($date_path, 0777, true);
                }
                $thumb_path = $date_path . '/' . $info->getFilename();
                $thumb_url_path = $thumb_url . '/' . $info->getFilename();
                $image->thumb($width, $height)->save($thumb_path);
                $uploadinfo = ['code' => 0, 'data' => ['filepath' => $url_path,'thumbimgpath'=>$thumb_url_path],'msg'=>''];
                return json_encode($uploadinfo);
            }else{
                // 上傳失敗獲取錯誤信息
                return json_encode(['code'=>-1,'data'=>'','msg'=>$file->getError()]);
            }
    }
  }
//調用
www.xxx.com/api/goods/uploadFile
$res = uploadFile('image','goods',200,200);
var_dump($res);