PHP 查询 mssql数据库时latin1数据

$query = 'select Address collate Chinese_PRC_CI_AS from A';
    $rs = mssql_query($query,$conn) or die ('Query failed: '.$query);
    if ($row = mssql_fetch_array($rs))
    {
        $address = $row[0];
        $address = iconv('GBK','UTF-8',$address);
        echo $address;
    }

$tit_query = "SELECT convert(varchar,PhotoAlbumName collate Chinese_PRC_CI_AS) as PhotoAlbumName,PhotoAlbumSID FROM tblPhotoAlbum where PhotoAlbumID = 'B8-B1-55-2A-01-BD-F1-A6-C1-EF-EF-52-76-42-54-3C'";