doctype([$type = 'xhtml1-strict'])

set_cookie($name[, $value = ''[, $expire = ''[, $domain = ''[, $path = '/'[, $prefix = ''[, $secure = FALSE[, $httponly = FALSE]]]]]]])

add_dir($directory)

PHP version 5.6 or newer is recommended. It should

get_where([$table = ''[, $where = NULL[, $limit = NULL[, $offset = NULL]]]])

is_countable($word)

uri_string()

current_url()

languages()

extract_urls($urls)