cache_off()

set($key[, $value = ''[, $escape = NULL]])

class CI_DB_utility backup([$params = array()])

unbuffered_row([$type = 'object'])

start_cache()

first_row([$type = 'object'])

escape($str)

trans_complete()

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

cache_delete_all()