代码
//统计评论条数
$sql=mysqli_query($link,"select count(com_id) as c from comments com_id='$id'");
$data=mysqli_fetch_assoc($sql);
$count=$data['c'];
echo $count;
echo $id;//这个是商品id出得来
然后报错
Warning: mysqli_fetch_assoc() expects parameter 1 to be mysqli_result...
谢谢!