Horde_Imap_Client_Socket::_status PHP Method

    protected function _status($mboxes, $flags)
    {
        $on_error = null;
        $out = $to_process = array();
        $pipeline = $this->_pipeline();
        $unseen_flags = array(Horde_Imap_Client::STATUS_FIRSTUNSEEN, Horde_Imap_Client::STATUS_UNSEEN);
        foreach ($mboxes as $mailbox) {
            /* If FLAGS/PERMFLAGS/UIDNOTSTICKY/FIRSTUNSEEN are needed, we must
             * do a SELECT/EXAMINE to get this information (data will be
             * caught in the code below). */
            if ($flags & Horde_Imap_Client::STATUS_FIRSTUNSEEN || $flags & Horde_Imap_Client::STATUS_FLAGS || $flags & Horde_Imap_Client::STATUS_PERMFLAGS || $flags & Horde_Imap_Client::STATUS_UIDNOTSTICKY) {
                $this->openMailbox($mailbox);
            }
            $mbox_ob = $this->_mailboxOb($mailbox);
            $data = $query = array();
            foreach ($this->_statusFields as $key => $val) {
                if (!($val & $flags)) {
                    continue;
                }
                if ($val == Horde_Imap_Client::STATUS_HIGHESTMODSEQ) {
                    $c = $this->_capability();
                    /* Don't include modseq returns if server does not support
                     * it. */
                    if (!$c->query('CONDSTORE')) {
                        continue;
                    }
                    /* Even though CONDSTORE is available, it may not yet have
                     * been enabled. */
                    $c->enable('CONDSTORE');
                    $on_error = function () use($c) {
                        $c->enable('CONDSTORE', false);
                    };
                }
                if ($mailbox->equals($this->_selected)) {
                    if (!is_null($tmp = $mbox_ob->getStatus($val))) {
                        $data[$key] = $tmp;
                    } elseif ($val == Horde_Imap_Client::STATUS_UIDNEXT && $flags & Horde_Imap_Client::STATUS_UIDNEXT_FORCE) {
                        /* UIDNEXT is not mandatory. */
                        if ($mbox_ob->getStatus(Horde_Imap_Client::STATUS_MESSAGES) == 0) {
                            $data[$key] = 0;
                        } else {
                            $fquery = new Horde_Imap_Client_Fetch_Query();
                            $fquery->uid();
                            $fetch_res = $this->fetch($this->_selected, $fquery, array('ids' => $this->getIdsOb(Horde_Imap_Client_Ids::LARGEST)));
                            $data[$key] = $fetch_res->first()->getUid() + 1;
                        }
                    } elseif (in_array($val, $unseen_flags)) {
                        /* RFC 3501 [6.3.1] - FIRSTUNSEEN information is not
                         * mandatory. If missing in EXAMINE/SELECT results, we
                         * need to do a search. An UNSEEN count also requires
                         * a search. */
                        $squery = new Horde_Imap_Client_Search_Query();
                        $squery->flag(Horde_Imap_Client::FLAG_SEEN, false);
                        $search = $this->search($mailbox, $squery, array('results' => array(Horde_Imap_Client::SEARCH_RESULTS_MIN, Horde_Imap_Client::SEARCH_RESULTS_COUNT), 'sequence' => true));
                        $mbox_ob->setStatus(Horde_Imap_Client::STATUS_FIRSTUNSEEN, $search['min']);
                        $mbox_ob->setStatus(Horde_Imap_Client::STATUS_UNSEEN, $search['count']);
                        $data[$key] = $mbox_ob->getStatus($val);
                    }
                } else {
                    $query[] = $key;
                }
            }
            $out[strval($mailbox)] = $data;
            if (count($query)) {
                $cmd = $this->_command('STATUS')->add(array($this->_getMboxFormatOb($mailbox), new Horde_Imap_Client_Data_Format_List(array_map('Horde_String::upper', $query))));
                $cmd->on_error = $on_error;
                $pipeline->add($cmd);
                $to_process[] = array($query, $mailbox);
            }
        }
        if (count($pipeline)) {
            $this->_sendCmd($pipeline);
            foreach ($to_process as $val) {
                $out[strval($val[1])] += $this->_prepareStatusResponse($val[0], $val[1]);
            }
        }
        return $out;
    }