<?php

$con=mysqli_connect("localhost","my_user","my_password","my_db");

// 检测链接

if (mysqli_connect_errno($con))

{

    echo "连接到 MySQL 失败: " . mysqli_connect_error();

}

$sql = "SELECT Lastname FROM Persons ORDER BY LastName;";

$sql .= "SELECT Country FROM Customers";

// 执行多个 SQL 语句

if (mysqli_multi_query($con,$sql))

{

    do

    {

        // 存储第一个结果集

        if ($result=mysqli_store_result($con))

        {

            while ($row=mysqli_fetch_row($result))

            {

                printf("%sn",$row[0]);

            }

            mysqli_free_result($result);

        }

    }

    while (mysqli_next_result($con));

}

mysqli_close($con);

?>