<?php

// 假定数据库用户名：root，密码：123456，数据库：RUNOOB

$con=mysqli_connect("localhost","root","123456","RUNOOB");

if (mysqli_connect_errno($con))

{

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

} 

$sql="SELECT name,url FROM websites ORDER BY alexa";

$result=mysqli_query($con,$sql);

// 数字数组

$row=mysqli_fetch_array($result,MYSQLI_NUM);

printf ("%s : %s",$row[0],$row[1]);

// 关联数组

$row=mysqli_fetch_array($result,MYSQLI_ASSOC);

printf ("%s : %s",$row["name"],$row["url"]);

// 释放结果集

mysqli_free_result($result);

mysqli_close($con);

?>