mysqli 面向对象的查询方式

<?php
$con=new mysqli('localhost','root','123','test');
$stmt=$con->prepare("select * from books where id>=?");

$stmt->bind_param('i',$id);
$id=2;

$stmt->bind_result($id,$bname);
$stmt->execute();
while ($stmt->fetch()){
  echo $id,"\t",$bname,PHP_EOL;
}

//$result=$stmt->get_result();
////
////while ($row=$result->fetch_assoc()){
////    echo $row["id"],"\t",$row["bname"],PHP_EOL;
////}
////
////$result->close();

$stmt->close();
$con->close();