<?php  $mysqli=new mysqli("localhost", "root", "123456", "xsphpdb");

 $stmt=$mysqli->prepare("select id, name, price, num, desn from shops where id>?");

 $stmt->bind_param("i", $id);

 $stmt->bind_result($id, $name, $price, $num, $desn);

 $id=99;

 $stmt->execute();    $stmt->store_result(); //一次性将结果都取过来 重要

 //字段信息  $result=$stmt->result_metadata();    while($field=$result->fetch_field()){   echo $field->name."--";  }  echo ‘<br>‘;  //记录信息   //$stmt->data_seek(2);  while($stmt->fetch()){   echo "$id--$name---$price---$num---$desn <br>";  }

 echo "记录总数：".$stmt->num_rows;

 $stmt->free_result();

 $stmt->close();

mysqli_stmt预处理类