<?php
//造DSN：驱动名:dbname=数据库名;host=服务器地址
$dsn = "mysql:dbname=mydb;host=localhost";
//造PDO对象
$pdo = new PDO($dsn,"root","123");
//写SQL语句
$sql = "select * from Info";
//预处理，先把SQL语句放到服务器上等待我们给他指令去执行
//准备一条SQL语句
$stm = $pdo->prepare($sql);
//执行准备好的SQL语句,成功返回true，失败返回false
if($stm->execute())
{
//1.逐行取数据
//var_dump($stm->fetch());
//2.取所有的
//var_dump($stm->fetchAll(PDO::FETCH_OBJ));//大小写很重要
//3.取某一列
//var_dump($stm->fetchColumn(1));
//4.返回对象
//var_dump($stm->fetchObject());
}
else
{
echo "执行失败！";
}
?>
</body>
</html>
pdo采用数组调用
<body>
<?php
//造对象
$dsn = "mysql:dbname=mydb;host=localhost";
$pdo = new PDO($dsn,"root","123");
//写SQL语句,参数用?来代替
//$sql = "insert into Nation values(?,?)";
$sql = "insert into Nation values(:code,:name)";
//预处理
$stm = $pdo->prepare($sql);
//给参数绑定值（不用）
/*$stm->bindParam(1,$code);
$stm->bindParam(2,$name);
$code = "p100";
$name = "回家";*/
/*$stm->bindParam("code",$code,PDO::PARAM_STR);
$stm->bindParam("name",$name,PDO::PARAM_STR);
$code = "p102";
$name = "回家";*/
//造数组
//$attr = array("p101","很快");
//$attr = array("code"=>"p103","name"=>"shj");
//执行
if($stm->execute($_POST))//接受form 表单中的数据
{
echo "添加成功";
}
else
{
echo "添加失败";
}
?>