# woocommerce-pos/1.10.20/vendor_prefixed/chillerlan/php-qrcode/src/Data/QRDataModeInterface.php

WCPOS – Point of Sale (POS) plugin for WooCommerce, version 1.10.20. 57 lines.

- Page: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/code/vendor_prefixed/chillerlan/php-qrcode/src/Data/QRDataModeInterface.php
- Raw: https://pluginprobe.com/plugins/woocommerce-pos/1.10.20/raw/vendor_prefixed/chillerlan/php-qrcode/src/Data/QRDataModeInterface.php
- Modified: 2026-06-09T13:55:26+00:00

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```php
<?php

/**
 * Interface QRDataModeInterface
 *
 * @created      01.12.2015
 * @author       Smiley <smiley@chillerlan.net>
 * @copyright    2015 Smiley
 * @license      MIT
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Data;

use WCPOS\Vendor\chillerlan\QRCode\Common\BitBuffer;
/**
 * Specifies the methods reqired for the data modules (Number, Alphanum, Byte and Kanji)
 */
interface QRDataModeInterface
{
    /**
     * the current data mode: Number, Alphanum, Kanji, Hanzi, Byte, ECI
     *
     * tbh I hate this constant here, but it's part of the interface, so I can't just declare it in the abstract class.
     * (phan will complain about a PhanAccessOverridesFinalConstant)
     *
     * @see https://wiki.php.net/rfc/final_class_const
     *
     * @var int
     * @see \chillerlan\QRCode\Common\Mode
     * @internal do not call this constant from the interface, but rather from one of the child classes
     */
    public const DATAMODE = -1;
    /**
     * retruns the length in bits of the data string
     */
    public function getLengthInBits() : int;
    /**
     * encoding conversion helper
     *
     * @throws \chillerlan\QRCode\Data\QRCodeDataException
     */
    public static function convertEncoding(string $string) : string;
    /**
     * checks if the given string qualifies for the encoder module
     */
    public static function validateString(string $string) : bool;
    /**
     * writes the actual data string to the BitBuffer, uses the given version to determine the length bits
     *
     * @see \chillerlan\QRCode\Data\QRData::writeBitBuffer()
     */
    public function write(BitBuffer $bitBuffer, int $versionNumber) : QRDataModeInterface;
    /**
     * reads a segment from the BitBuffer and decodes in the current data mode
     */
    public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber) : string;
}

```