<?php
    $conn = new mysqli(‘localhost‘,‘root‘,‘‘,‘orders‘); //连接
    $prepare = "insert into t100 values (?,?,?)";//预设插入sql
    $bind = $conn->prepare($prepare);
    $t1 = NULL;
    $t2 = ‘Www‘;
    $t3 = date(‘Y-m-d H:i:s‘);
    $bind->bind_param(‘iss‘,$t1,$t2,$t3); //绑定
    //注意iss：
    //i为int，s为string类型；意思是强制这几个参数的类型
    $bind->execute();//执行

    $prepare = "select * from t100"; //准备要查询的语句
    $bind = $conn->prepare($prepare);//预处理
    $t1 = 10;
    $bind->execute();//执行
    $bind->bind_result($id, $name, $date);//将字段列绑定到变量上
    $bind->store_result();//获取结果集
    while ($bind->fetch()){//遍历
        printf("%d == %s == %s<br />",$id,$name,$date);//输出
    }