annotation and PHP IMAP extension

[Marco]

Hello,

  Cyrus-imapd make wide use of annotations.

I already have a PHP program to query many IMAP info about mailboxes. I 
would like to query annotations too.

But official PHP IMAP extension doesn't support getannotation or 
setannotation command:

    https://bugs.php.net/bug.php?id=67956

Really, now Cyrus 3 adopts METADATA commands, I suppose. Now I'm working 
with Cyrus 2.4.

Could you suggest me some PHP libraries to use these commands?

Thank you very much
Marco