Question

我想获取评论表中的记录总数，将其存储在变量$ count中并显示它。我应该在以下代码中添加什么内容？

  $stmt = $mysqli->prepare("select count(*) from comments where post_id=?");
  $stmt->bind_param('i',$id); 
  $id = 133;
  $stmt->execute();

Answer 1

我应该在以下代码中添加什么内容？

此...

$stmt->bind_result($count);
if ($stmt->fetch()) {
    echo $count;
}