connect([$config = array()])

replace([$table = ''[, $set = NULL]])

post([$index = NULL[, $xss_clean = NULL]])

delete_dir($filepath)

item($item[, $index=''])

request_headers([$xss_clean = FALSE])

mb_strpos($haystack, $needle[, $offset = 0[, $encoding = NULL]])

form_submit([$data = ''[, $value = ''[, $extra = '']]])

select_min([$select = ''[, $alias = '']])

create_table($table[, $if_not_exists = FALSE[, array $attributes = array()]])