<?php
//连接参数
$dsn="mysql:host=localhost;dbname=test";
$user="root";
$password="123456";
 
//创建pdo连接
$pdo=new PDO($dsn, $user, $password, array(PDO::ATTR_PERSISTENT => true));
$pdo->query("set names utf8");
 
//处理结果
foreach($pdo->query("select ename from emp") as $row){
    print $row['ename']."\n";
}