Get the Whitepaper called File(), Fgets(), Fgetc() Local File Disclosure (LFD).
You can download it from the following link: https://packetstormsecurity.com/files/download/86477/localfile_disclosure.txt
Source: https://packetstormsecurity.com/files/86477/File-Fgets-Fgetc-Local-File-Disclosure-Paper.html