Returns the type of the file. Possible values are fifo,
char, dir, block, link, file, and unknown.
Returns FALSE if an
error occurs. filetype() will also
produce an E_NOTICE message
if the stat call fails or if the file type is unknown.
The results of this function are cached. See
clearstatcache() for more details.
This function will not work on remote files; the file to be
examined must be accessible via the server's filesystem.
See also: is_dir(),
is_file(),
is_link(), file_exists(), and stat().