So, yeah...
Something like 2 years ago? I was bored in school, so I decided to make something on website that I was creating then...
I wrote few lines and sent file to the server.
BANG!
I don't know how, but I saved it as "index.php" in the root folder of website. I overwritten fucking index.php, lost this fucking file. Soo... I had two options: make index.php from the beginning, or restore backup and loose changes form 24 hours. I choosed the second option.