Remove Image background with php and save transparent png

Question

I want to remove the white background of any image uploaded on the site working on PHP platform. The uploading function is done but messed up with this functionality.

Answer 1

Use the php image processing and GD, read the image pixel by pixel if the RGB components are all 255 (The pixel is white), set the alpha channel to 255 (transparent). You may have to change the filetype of the image depending if the uploaded filetype supports an alpha channel.