This isn't anything particularly impressive, its just something I threw together in class one day. Its pretty kludgy, and the EXIF data printing I took from somewhere (sorry, I did this as a quick hack and didn't write down who made that part originally. If its your, just let me know and I'll edit this to give you credit).
Essentially, you upload a JPG image, and it dumps all the EXIF data for you, showing you what all was stored in the file for it, and then gives you a version stripped of the exif data.
Now, I'd like to point out, there are probably some security holes that I don't particularly feel like patching. In particular, it isn't getting rid of the existing image, this is somewhat intentional, since it lets you show someone what all had been stored in it. Since this was originally intended just to demonstrate to someone what EXIF data was in an image, this was kind of the point. Now I'm relatively sure there is a way to hack this, but I'm too lazy too really go back and secure it. In particular, the check for whether or not the uploaded file is a JPG isn't the most rigorous, its quite possible that you could trick it into allowing a non-jpg image to be uploaded.
If that doesn't scare you away, or you just want to point and laugh at my code, here's a zip for it. Just unzip and toss some place with a PHP interpreter. You will also need to create a /tests directory. I can confirm this works on NearlyFreeSpeech.net.
If you've got any comments, suggestions, or fixes to something, let me know. I may eventually toss this up on Github, but I really don't know GIT well enough to do that yet.