composer require fenghoer/think-image:dev-master
$image = \fenghoer\Image::open('./image.jpg');
或者
$image = \fenghoer\Image::open(request()->file('image'));
$image->crop(...)
->thumb(...)
->water(...)
->text(....)
->save(..);
## water 接口在原基础上支持了对string格式水印图片资源的兼容