select-为什么这里输出值有++

selectphpms sql

<code> <?php include 'wechat_conn.php';?>    <?php mssql_select_db('his',$ms_conn);    $sql ="select top 1 * from zsb_customer";    $res=mssql_query($sql,$ms_conn);    while ($result=mssql_fetch_array($res)){      ?>    <ul>       <li><?php $result[ctm_name] ?></li>       <li><?php $result[ctm_code] ?></li>    </ul>    <?php };    echo "++";    $mssql_close($ms_conn);    ?></code>