Prestashop Module or customisation: Upload image

Prestashop expert and Senior php coder: New module or Customise Back Office, Catalog, Product, 2. Images. Functionality: Paste the url of an image (image is on another website) in a textbox and after submitting it saves the image as the image of a Product. The image will be downloaded from another website and saved in the normal way to img/p ? and generating the typical 6 image files. The following code already works in a seperate php page, outside Prestashop e.g. [login to view URL] .: Paste the url of an image (image is on another website) in a textbox and after submitting it saves the image to a folder. It just saves it to a folder but does not link it to a product and it does not generate many pictures / thumbnails in img/p. Above code must be combined with a Prestashop module like this one which uploads images to the correct folder and generate many images / thumbnails. [login to view URL]