通过imap php的“ X-GM-THRID”

$imap = new Zend\\Mail\\Protocol\\Imap(\'imap.gmail.com\', \'993\', true);
$imap->search(array(\'X-GM-THRID\', \'1424628081834791276\');

$messageId = 1; // E.g. the message number one
$imap = new Zend_Mail_Protocol_Imap(\'imap.gmail.com\', \'993\', true);
$message = $imap->requestAndResponse(\"FETCH $messageId (X-GM-THRID)\");
$idHex = (int) $message[0][2][1];
$xGmThrid = base_convert($idHex, 10, 16);