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<?php
namespace SilverStripe\HybridSessions\Store\DatabaseStore;
/**
* Encoding and Decoding binary data into text (UTF-8) with a simple json markup that ensures
* it's not going to decode some random data (backward compatibility)
*
* Silverstripe 4.4 does not have a binary database field implementation, so we have to store
* binary data as text.
* @internal This class is internal API of DatabaseStore and may change without warnings
*/
class DataCodec
{
* Encode binary data into ASCII string (a subset of UTF-8)
* @param string $data This is a binary blob
* @return string
public static function encode($data) {
return json_encode([
self::class,
base64_encode($data)
]);
}
* Decode ASCII string into original binary data (a php string)
* @param string $text
* @param null|string
public static function decode($text) {
$struct = json_decode($text, true, 2);
if (!is_array($struct) || count($struct) !== 2) {
return null;
if (!isset($struct[0]) || !isset($struct[1]) || $struct[0] !== self::class) {
return base64_decode($struct[1]);
silverstripe /
silverstripe-hybridsessions
