CodeIgniter’s database abstraction allows you to use transactions with databases that support transaction-safe table types. In MySQL, you’ll need to be running InnoDB or BDB

class CI_Unit_test set_test_items($items)

get_total_days($month, $year)

element($item, $array[, $default = NULL])

database([$params = ''[, $return = FALSE[, $query_builder = NULL]]])

class CI_Migration current()

escape($str)

class CI_FTP connect([$config = array()])

base_url($uri = '', $protocol = NULL)

set_empty($value)