I know how to get extension of files in many dozens of ways, but sometimes out of curiosity, i search the net for codes i already know how to write just to
see if someone has done a better job.
Now, i was building a simple file upload API into my framework, and i wanted to check easiest way to get file extension without wasting too
much time - and i was able to get it.

What struck me as funny was the way the programmers there dey fight over codes:

http://davidwalsh.name/php-function-get-file-extension-string

Immagine someone saying his code is faster than the first one, and another one saying,
that the code said to be faster is "slower in 0.5 times".

Meaning, he actually took the time out to compare and see which code dey faster!