pdo调用

php单次调用，例题

<body>

<?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";

}

?>

</body>

</html>

巴特西

pdo调用

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