When values contain letters, numbers, and Chinese, there will be garbled code about spss HOT 1 CLOSED

public function write(Buffer $buffer)
    {
        $var = (count($this->variables) > 0) ? $this->variables[count($this->variables) - 1] : null;
        $convertToDouble = (isset($var) && ($var->width > 0));

        // Value label record.
        $buffer->writeInt(self::TYPE);
        $buffer->writeInt(\count($this->labels));
        foreach ($this->labels as $item) {
            $labelLength = min(mb_strlen($item['label']), self::LABEL_MAX_LENGTH);
            $label = mb_substr($item['label'], 0, $labelLength);
            $labelLengthBytes = mb_strlen($label, '8bit');
            while ($labelLengthBytes > 255) {
                // Strip one char, can be multiple bytes
                $label = mb_substr($label, 0, -1);
                $labelLengthBytes = mb_strlen($label, '8bit');
            }

            if ($convertToDouble) {
                $item['value'] = Utils::stringToDouble($item['value']);
            }

            //fix Convert non numeric values to double type
            if (!$convertToDouble && !is_numeric($item['value'])) {
                $item['value'] = Utils::stringToDouble($item['value']);
            }

            $buffer->writeDouble($item['value']);
            $buffer->write(\chr($labelLengthBytes));
            $buffer->writeString($label, Utils::roundUp($labelLengthBytes + 1, 8) - 1);
        }

        // Value label variable record.
        $buffer->writeInt(4);
        $buffer->writeInt(\count($this->indexes));
        foreach ($this->indexes as $varIndex) {
            $buffer->writeInt($varIndex);
        }
    }
`