protect_identifiers($item[, $prefix_single = FALSE[, $protect_identifiers = NULL[, $field_exists = TRUE]]])

previous_row([$type = 'object'])

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

reset_validation()

insert_batch($table[, $set = NULL[, $escape = NULL[, $batch_size = 100]]])

rsegment($n[, $no_result = NULL])

insert([$items = array()])

form_radio([$data = ''[, $value = ''[, $checked = FALSE[, $extra = '']]]])

display_errors([$open = ' [, $close = ' ']])

class CI_Pagination initialize([$params = array()])