BarcodeGenerator::qr_ec_split

private function qr_ec_split($data, $ec_params) {
	$blocks = array();
	$offset = 0;
	for ($i = $ec_params[2], $length = $ec_params[3]; $i > 0; $i--) {
		$blocks[] = array_slice($data, $offset, $length);
		$offset += $length;
	}
	for ($i = $ec_params[4], $length = $ec_params[5]; $i > 0; $i--) {
		$blocks[] = array_slice($data, $offset, $length);
		$offset += $length;
	}
	return $blocks;
}