class.upload.php is a powerful and mature PHP class to manage uploaded files, and manipulate images in many ways. The script is available under a GPL license.
OK, I see the issue. It is because image_ratio_no_zoom_in. In fact, as per the documentation, you can use only one image_ratio_xxx at the same time.
It is a shortcoming of the class: if you use image_ratio_crop, you cannot use image_ratio_no_zoom_in or image_ratio_no_zoom_out at the same time.
It is planned to change these two settings into somehing like image_no_zoom_in and image_no_zoom_out and have them to apply to all image_ratio_xxx settings.Reply
It is a shortcoming of the class: if you use image_ratio_crop, you cannot use image_ratio_no_zoom_in or image_ratio_no_zoom_out at the same time.
It is planned to change these two settings into somehing like image_no_zoom_in and image_no_zoom_out and have them to apply to all image_ratio_xxx settings.