close()

encode_php_tags($str)

do_upload([$field = 'userfile'])

empty_table([$table = ''])

create_captcha([$data = ''[, $img_path = ''[, $img_url = ''[, $font_path = '']]]])

base_url()

active([$state = TRUE])

word_wrap($str[, $charlim = 76])

version()

total_queries()