db_set_charset($charset)

CodeIgniter comes with a full-featured and very fast abstracted database class that supports both traditional structures and Query Builder patterns. The database functions

or_where($key[, $value = NULL[, $escape = NULL]])

reset_query()

cache_off()

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

row_object([$n = 0])

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

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

field_data()