Please leave me a message afterwards, such that I am informed about the file.
I am really disappointed. If you try to hack my server via my upload formular (which I believe isn't possible), then please send me somtehing interesting, not just a copy of some dull PHP snippet which you can find on PHP.net.
Deal?
BTW when you wonder where this rabbit hole leads your file to:
To Cert-Bund, but only if it's interesting.
For you perspection it's a WOM.
Thanks for careful driving.