tp3.2上传图片生成缩略图

//引入

use think\Image;

/*

   * $name为表单上传的name值

   * $filePath为为保存在入口文件夹public下面uploads/下面的文件夹名称，没有的话会自动创建

   * $width指定缩略宽度

   * $height指定缩略高度

   * 自动生成的缩略图保存在$filePath文件夹下面的thumb文件夹里，自动创建

   * @return array 一个是图片路径，一个是缩略图路径，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{

                // 上传失败获取错误信息

                return json_encode(['code'=>-1,'data'=>'','msg'=>$file->getError()]);

            }

    }

  }

//调用

www.xxx.com/api/goods/uploadFile

$res = uploadFile('image','goods',200,200);

var_dump($res);