tp5中上传图片方法，并生成相应缩略图的方法

//接收上传文件的name

$file = $this->_req->file("upload_head_image");

//将上传的文件移动到public/uploads/user

$info = $file->validate(["size"=>5242880,"ext"=>"jpg,jpeg,png"])->move(ROOT_PATH . "public" . DS . "uploads" . DS . "user");

if($info){
   $pic = new apphomemodelUser();
   $pic_url = $pic->thumbImage($file,$info);
   $user["portrait"] = "uploads/user/".$pic_url;
   //print_r($pic_url);exit();

 }

///model中代码如下
     /**
      * [生成用户头像缩略图，180、50]
      * @param  [type] $file [获取上传文件$_FILE]
      * @param  [type] $pic  [上传文件的路径]
      * @return [type]       [返回处理后的文件路径]
      */
    public function thumbImage($file,$pic){
        $image = hinkImage::open($file);
        $getSaveName = str_replace("\","/",$pic->getSaveName());

$portrait_thumbnail_180= "uploads/user/".str_replace($pic->getFilename(),"180_".$pic->getFilename(),$getSaveName);

$image->thumb(180,180, hinkImage::THUMB_CENTER)->save(ROOT_PATH . "public" . DS . $portrait_thumbnail_180,null,100,true);
        $portrait_thumbnail_80 = "uploads/user/".str_replace($pic->getFilename(),"80_".$pic->getFilename(),$getSaveName);
        $image->thumb(80,80, hinkImage::THUMB_CENTER)->save(ROOT_PATH . "public" . DS . $portrait_thumbnail_80,null,100,true);
        $portrait_thumbnail_50 = "uploads/user/".str_replace($pic->getFilename(),"50_".$pic->getFilename(),$getSaveName);

        $image->thumb(50,50, hinkImage::THUMB_CENTER)->save(ROOT_PATH . "public" . DS . $portrait_thumbnail_50,null,100,true);

if ($image) {
            return $getSaveName;
        }

    }