Within a plugin I am generating an image, I would like to save this image to the upload folder and update the WPDB with the location of said file. I cant find any build in wordpress functions to handle saving/writing/adding a file to the upload folder, should I just do this the old fashioned way with php, or is there something built into WordPress that I'm missing?
You need only to save generated file in the upload folder!... Use php.
If you need to add this file in