php输出数据，无法desc解决方法

php输出数据，无法desc

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php    $sql="select C.id,C.number    from cargo1 C left join cargo2 C2 on C.number = C2.number left join cargo3 C3 on C.number = C3.number";    if($_SESSION['filter']){        if(ereg("^[a-zA-Z]*$",$_SESSION['auth'])){            $sql.=" where C.shipper like '%".$_SESSION['filter']."%' or  C.cnee like '%".$_SESSION['filter']."%'";        }else{            $sql.=" where ucase(C.pol)='".$_SESSION['filter']."'";        }//if ereg    }//if    $sql.=" order by C.id desc";    $q=$m->query($sql);    $tb="";    while ($r=$q->fetch_array(MYSQLI_USE_RESULT)){        $tb.="<tr style='white-space:nowrap;'><td><a href='javascript:void(0);' onClick='ajaxDo(\"showInput\",\"ajaxDo.php?t=display&number=".$r[number]."\",\"showMain\")' title='View details/查看更多...'>".$r[number]."</a></td><td>".$r[shipper]."</td><td>".$r[cnee]."</td><td>".$r[po]."</td><td>".$r[invoice]."</td><td>".$r[pol]."</td><td>".$r[pod]."</td>            <td>".$r[dest]."</td><td>".$r[vessel]."</td><td>".$r[bookingDate]."</td><td>".$r[receivedBooking]."</td><td>".$r[confirmSpace]."</td></tr>";    }?><div class="show">    <table cellpadding="0" cellspacing="0" border="0" class="display" id="example" width="100%">    <thead>        <tr style="white-space:nowrap;">                  <th>編號</th>            <th>出貨人</th>             </tr>    </thead>    <tbody>        <?php echo $tb;?>    </tbody>    <tfoot>        <tr style="white-space:nowrap;">                  <th>編號</th>            <th>出貨人</th>          </tr>    </tfoot></table>

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