Extracting the memo from the transaction record

Question

Stellar newbie here, using the ZuluCrypto PHP SDK. I can successfully submit this transaction:

$transaction = Server::testNet()
    ->buildTransaction(xxx_Account_A_xxx)
    ->addCustomAssetPaymentOp($asset, $amount, xxx_Account_B_xxx)
    ->setMemo( new Memo(3, 'DEADMEATDEADMEATDEADMEATDEADMEAT'));

(3 is the MEMO_TYPE for a 32 byte hash.) But then transaction record retrieved from horizon-testnet shows the memo as REVBRE1FQVRERUFETUVBVERFQURNRUFUREVBRE1FQVQ= (with the correct memo_type 3), and the Stellar Lab XDR viewer won't decode this as a "Memo" or anything else.

How do I set a memo and then retrieve that memo from the transaction record?

Answer 1

The memo value returned by Horizon is base64 encoded. You can decode the value with base64_decode.