__FILENAME__ __file__
dir() os.getcwd()
file_exist os.path.isfile()
is_dir os.path.exist()
fopen open
fgets readline()
fgetc read(n)
scandir os.listdir()
opendir
readdir
filetype
ulink os.remove
file_get_contents
file_put_contents
umask 022
touch mknod
mkdir os.mkdir
DIRECTORY_SEPARATOR os.spe
flush