Horde_Imap_Client_Socket::_fetch PHP Method

    protected function _fetch(Horde_Imap_Client_Fetch_Results $results, $queries)
    {
        $pipeline = $this->_pipeline();
        $pipeline->data['fetch_lookup'] = array();
        $pipeline->data['fetch_followup'] = array();
        foreach ($queries as $options) {
            $this->_fetchCmd($pipeline, $options);
            $sequence = $options['ids']->sequence;
        }
        try {
            $resp = $this->_sendCmd($pipeline);
            /* Check for EXPUNGEISSUED (RFC 2180 [4.1]/RFC 5530 [3]). */
            if (!empty($resp->data['expungeissued'])) {
                $this->noop();
            }
            foreach ($resp->fetch as $k => $v) {
                $results->get($sequence ? $k : $v->getUid())->merge($v);
            }
        } catch (Horde_Imap_Client_Exception_ServerResponse $e) {
            if ($e->status === Horde_Imap_Client_Interaction_Server::NO) {
                if ($e->getCode() === $e::UNKNOWNCTE) {
                    /* UNKNOWN-CTE error. Redo the query without the BINARY
                     * elements. */
                    $bq = $pipeline->data['binaryquery'];
                    foreach ($queries as $val) {
                        foreach ($bq as $key2 => $val2) {
                            unset($val2['decode']);
                            $val['_query']->bodyPart($key2, $val2);
                            $val['_query']->remove(Horde_Imap_Client::FETCH_BODYPARTSIZE, $key2);
                        }
                        $pipeline->data['fetch_followup'][] = $val;
                    }
                } elseif ($sequence) {
                    /* A NO response, when coupled with a sequence FETCH, most
                     * likely means that messages were expunged. (RFC 2180
                     * [4.1]) */
                    $this->noop();
                }
            }
        } catch (Exception $e) {
            // For any other error, ignore the Exception - fetch() is nice in
            // that the return value explicitly handles missing data for any
            // given message.
        }
        if (!empty($pipeline->data['fetch_followup'])) {
            $this->_fetch($results, $pipeline->data['fetch_followup']);
        }
    }