version()

userdata([$key = NULL])

mark_as_temp($key[, $ttl = 300])

limit($value[, $offset = 0])

strip_image_tags($str)

set_message($lang[, $val = ''])

set_flashdata($data[, $value = NULL])

site_url([$uri = ''[, $protocol = NULL]])

sess_regenerate([$destroy = FALSE])

crop()