/*
	- Get File Extension
	- Gets the file extension from the file's name.
	
	$fileName      - The name of the file to get the extension of.
	$includePeriod - Whether or not to include the prefix period (eg. ".txt")
	*/
	
	public function getFileExtension($fileName, $includePeriod = true) {
		if (strpos($fileName, ".")) {
			$sides = explode(".", $fileName);
			$ext = "";

			if ($includePeriod)
				$ext .= ".";

			$ext .= $sides[count($sides) - 1];
			return $ext;
		} else
			return "N/A";
	}