word_limiter($str[, $limit = 100[, $end_char = '…']])

destroy()

has_rule($field)

slash_item($item)

initialize($params)

force_download([$filename = ''[, $data = ''[, $set_mime = FALSE]]])

nl2br_except_pre($str)

elapsed_time([$point1 = ''[, $point2 = ''[, $decimals = 4]]])

upload($locpath, $rempath[, $mode = 'auto'[, $permissions = NULL]])

array_column(array $array, $column_key[, $index_key = NULL])