<?php
//PDO：数据访问抽象层 //dsn：数据源： //带有事务功能： $dsn = "mysql:host=localhost;dbname=mydb"; //造pdo对象 $pdo = new PDO($dsn,"root","123"); //设置为异常模式 $pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION );
try { //写SQL语句 $sql = "insert into Nation values('n009','藏族')"; $sql1 = "insert into Nation values('n001','藏族')"; //$sql2 = "insert into Nation values('n012','藏族')"; //启动事务 $pdo->beginTransaction(); //执行SQL语句 $pdo->exec($sql); $pdo->exec($sql1); //$pdo->exec($sql2); $pdo->commit(); } catch(PDOException $e) { //echo $e->getMessage(); //回滚事务 $pdo->rollBack(); }
/*foreach($a as $v) { var_dump($v); }*/
?>
<body> <?php
//2.可以防止SQL注入攻击 $dsn="mysql:host=localhost;dbname=mydb"; $pdo = new PDO($dsn,"root","123");
$sql = "insert into Nation values(?,?)";
//将一条SQL语句放到服务器等待执行 $stm = $pdo->prepare($sql);
/*//绑定参数 $stm->bindParam(1,$code); $stm->bindParam(2,$name);
//给变量赋值 $code = "n030"; $name = "哈空间";*/
$attr = array("n031","客户"); //执行预处理语句,执行成功返回true，执行失败返回false if($stm->execute($attr)) { //var_dump($stm->fetch()); //var_dump($stm->fetchAll(PDO::FETCH_ASSOC)); }
?> </body>