Could someone give me an example of image uploader from URL?

I am using this Image Upload and Cropping with开发者_运维技巧 PHP and Jquery: 9lessons.info Maybe someone can give me please PHP script or link to script that allows me upload image from URL?

I've found that re-sizing images using GD can be buggy, especially when you're dealing with transparency. It could also just be that your script bugs out after it's created the image but before it's copied any data into it.

Go over it step-by-step and see when the image turns black.