108     protected function qr_encode($data, $ecl)  argument
110         list($mode, $vers, $ec, $data) = $this->qr_encode_data($data, $ecl);
114         $mtx = $this->qr_finalize_matrix($mtx, $size, $ecl, $mask, $vers);
123     protected function qr_encode_data($data, $ecl)  argument
126         $version = $this->qr_detect_version($data, $mode, $ecl);
128         $ec_params = $this->qr_ec_params[($version - 1) * 4 + $ecl];
130         $max_chars = $this->qr_capacity[$version - 1][$ecl][$mode];
185     protected function qr_detect_version($data, $mode, $ecl)  argument
190             if ($length <= $this->qr_capacity[$v][$ecl][$mode]) {
718         $matrix, $size, $ecl, $mask, $version  argument
722         $format = $this->qr_format_info[$ecl * 8 + $mask];