base_url()

entity_decode($str, $charset = NULL)

robot()

index_page()

or_where_not_in([$key = NULL[, $values = NULL[, $escape = NULL]]])

data_seek([$n = 0])

get_dir_file_info($source_dir, $top_level_only)

get_post($index[, $xss_clean = NULL])

xss_clean($str[, $is_image = FALSE])

cache($time)