set_row($key[, $value = NULL])

redirect($uri = '', $method = 'auto', $code = NULL)

reduce_multiples($str[, $character = ''[, $trim = FALSE]])

is_cli_request()

optimize_database()

select([$select = '*'[, $escape = NULL]])

primary($table)

img([$src = ''[, $index_page = FALSE[, $attributes = '']]])

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

select_sum([$select = ''[, $alias = '']])