version()

get_item($row_id)

safe_mailto($email, $title = '', $attributes = '')

base_url()

set_cookie($name = ''[, $value = ''[, $expire = ''[, $domain = ''[, $path = '/'[, $prefix = ''[, $secure = FALSE[, $httponly = FALSE]]]]]]])

flashdata([$key = NULL])

is_cli_request()

cache_info()

word_wrap($str[, $charlim = 76])

hash_equals($known_string, $user_string)