128         $ec_params = $this->qr_ec_params[($version - 1) * 4 + $ecl];
165             $i = count($data), $a = 1, $n = $ec_params[0];
171         return array($mode, $version, $ec_params, $data);
385     protected function qr_encode_ec($data, $ec_params, $version)  argument
387         $blocks = $this->qr_ec_split($data, $ec_params);
390             $ec_blocks[] = $this->qr_ec_divide($blocks[$i], $ec_params);
421     protected function qr_ec_split($data, $ec_params)  argument
425         for ($i = $ec_params[2], $length = $ec_params[3]; $i > 0; $i--) {
429         for ($i = $ec_params[4], $length = $ec_params[5]; $i > 0; $i--) {
436     protected function qr_ec_divide($data, $ec_params)  argument
439         $num_error = $ec_params[1];