br([$count = 1])

sanitize_filename($filename)

group_by($by[, $escape = NULL])

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

initialize($params)

character_limiter($str[, $n = 500[, $end_char = '…']])

set_output($output)

cache_delete([$segment_one = ''[, $segment_two = '']])

driver($library[, $params = NULL[, $object_name]])

ip_address()