Horde_Imap_Client_Socket::_sendCmdChunk PHP Method

    protected function _sendCmdChunk($pipeline, $chunk)
    {
        if (empty($chunk)) {
            return;
        }
        $cmd_count = count($chunk);
        $exception = null;
        foreach ($chunk as $val) {
            $val->pipeline = $pipeline;
            try {
                if ($this->_processCmd($pipeline, $val, $val)) {
                    $this->_connection->write('', true);
                } else {
                    $cmd_count = 0;
                }
            } catch (Horde_Imap_Client_Exception $e) {
                switch ($e->getCode()) {
                    case Horde_Imap_Client_Exception::SERVER_WRITEERROR:
                        $this->_temp['logout'] = true;
                        $this->logout();
                        break;
                }
                throw $e;
            }
        }
        while ($cmd_count) {
            try {
                if ($this->_getLine($pipeline) instanceof Horde_Imap_Client_Interaction_Server_Tagged) {
                    --$cmd_count;
                }
            } catch (Horde_Imap_Client_Exception $e) {
                switch ($e->getCode()) {
                    case $e::DISCONNECT:
                        /* Guaranteed to have no more data incoming, so we can
                         * immediately logout. */
                        $this->_temp['logout'] = true;
                        $this->logout();
                        throw $e;
                }
                /* For all other issues, catch and store exception; don't
                 * throw until all input is read since we need to clear
                 * incoming queue. (For now, only store first exception.) */
                if (is_null($exception)) {
                    $exception = $e;
                }
                if ($e instanceof Horde_Imap_Client_Exception_ServerResponse && $e->command) {
                    --$cmd_count;
                }
            }
        }
        if (!is_null($exception)) {
            throw $exception;
        }
    }