从数据库中检索一条记录

Question

只是尝试从数据库中显示一条记录......但是收到错误（在获取数组时）

$con=mysql_connect("localhost","root","");
mysql_select_db("school");
$iid=$_REQUEST['id2'];   //mysql_fetch_array(): supplied argument is not a valid

$d=mysql_query("select * from notification where noticeid=$iid");
$data=mysql_fetch_array( $d ); 

这是我的显示标准......

<tr> 
<td class=""><?php echo $data['noticeid'] ?></td>  
<td class=""><?php echo $data['notificationtitle'] ?></td>  
<td class=""><?php echo $data['notificationbody'] ?></td>  
</tr>

Answer 1

试试这个：noticeid ='“。$ iid。” “

$d=mysql_query("select * from notification where noticeid='".$iid."' ");
$data=mysql_fetch_array( $d ); 

Answer 2

您可能想引用变量：

1. 如果noticeid是一个字符串：
   $d=mysql_query("select * from notification where noticeid='".$iid."'");

2. 如果noticeid是一个数字：
   $d=mysql_query("select * from notification where noticeid=".$iid);