PHP中PDO操作MySQL详解

extension=php_pdo.dll

extension=php_pdo_mysql.dll

DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
`id` int(10) NOT NULL DEFAULT '0',
`user` char(20) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `idx_age` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

<?php
header("content-type:text/html;charset=utf-8");
$dsn="mysql:dbname=test;host=localhost";
$db_user='root';
$db_pass='admin123';
try{
$pdo=new PDO($dsn,$db_user,$db_pass);
}catch(PDOException $e){
echo '数据库连接失败'.$e->getMessage();
}
//新增
$sql="insert into test (id,user) values (1,'phpthinking')";
$res=$pdo->exec($sql);
echo '影响行数：'.$res;
//修改
$sql="update test set user='phpthinking' where id=1";
$res=$pdo->exec($sql);
echo '影响行数：'.$res;
//查询
$sql="select * from test";
$res=$pdo->query($sql);
foreach($res as $row){
echo $row['user'].'<br/>';
}
//删除
$sql="delete from test where id=1";
$res=$pdo->exec($sql);
echo '影响行数：'.$res;