请问这是错在哪儿了?怎么改呀?多谢!!

<?
session_start();

//连接数据库,取得相应订单号对应的全部信息
$connect=mysql_connect("localhost","Wdwlbsm");
mysql_select_db($connect);
//如果job参数的值为delete的话,执行删除的操作
if($job="delete")
{
$query="delete from eorder where orderid='$orderid'";
if(mysql_query($query))
{
header("Locationrdermanage.php");
exit;
}
}
//如果job参数的值为update的话,执行更新的操作
if($job="update")
{
$query="update eorder set issent='$issent' where orderid='$orderid'";
mysql_query($query);
}
$query="select * from eorder where orderid='$orderid'";
$result=mysql_query($query);
$count=1;
$message[0]=0;
while($obj=mysql_fetch_object($result)) //<---------第27条
{
$message[$count]=$obj;
$message[0]++;
$count++;
}

mysql_close($connect);
//下面是输出HTML
?>



IE显示:
Warning: mysql_fetch_object(): supplied argument is not a valid MySQL result resource in c:\program files\apache group\apache\htdocs\cart\fullmessage.php on line 27