<?php<!doctype html><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><link type="text/css" rel="stylesheet" href="../css/admin.css" /><title>学生信息</title></head><div style="position:absolute;top: 140px ; left:330px; "><body><?PHP $sql1="select * from hourse $where order by hname desc $limit"; //此处加了降序$res=mysql_query($sql1);?><div></div><form action="lf_del.php" method=post> <table width="1000"> <tr width="100%"> <h2 >公寓信息</h2> </tr> <tr> <th width="35">选项</th> <th width="12%">公寓名 </th><th width="10%">居住性别 </th> <th width="11%">房间数 </th> <th width="11%">楼层数 </th><th width="13%">应住人数 </th> <th width="13%">实住人数 </th> <th width="15%">操作</th> </tr> <?PHP while($rows=mysql_fetch_array($res)){$sqladd2="update hourse set snumber='$totalnum2' where hid=$rows[0]";mysql_query($sqladd2,$link);$yingzhu=$rows[3]*$rows[4]*8;$sqladd="update hourse set ynumber='$yingzhu' where hid=$rows[0]";mysql_query($sqladd,$link);?> <tr> <td width="6%"><input type=checkbox name=de[] value=<?php echo $rows[0];?>></td> <td width="14%"><?php echo $rows[1];?> </td><td width="11%"><?php echo $rows[2];?> </td> <td width="11%"><?php echo $rows[3];?> </td> <td width="11%"><?php echo $rows[4];?> </td> <td width="13%"><?php echo $yingzhu;?> </td> <td width="13%"><?php $sqlshizhu="select sum(rshi) from room where rhourse=$rows[hname]"; $shizhu=mysql_query($sqlshizhu,$link); $rs=mysql_fetch_array($shizhu);echo $rs["sum(rshi)"];?> </td> <td width="15%"> <a href="lf_update.php?id=<?php echo $rows[0];?>">修改</a> </tr> <?php}?></table></form></body></div></html>当倒数14行$rows[hname]数组里的内容是文字时计算不出实住人数为甚么？当内容为数字1233时就可以，注意是内容不是$rows[hname]里的hname。请问这个问题怎么解决呢，谢谢帮忙！！！！
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