<?php

header('content-type:text/html;charset= utf-8');

//接收页面

$mysqli=new mysqli('localhost','root','root','test');

if($mysqli->connect_errno){

die($mysqli->connect_error);

}

$mysqli->set_charset('utf8');

$username=$_POST['username'];

$password=md5($_POST['password']);

$age=$_POST['age'];

$act=$_GET['act'];

//跟据不同操作完成不同功能

switch($act){

case 'addUser';

echo '添加用户的操作';

break;

}