PDO预处理功能

<?php
    $dsn = "mysql:dbname=text_0306;host=localhost";
    $pdo = new PDO($dsn,"root","123");
    
    //第一种预处理方式
    $sql = "insert into minzu values (?,?)";

    
    //将预处理语句发送到服务器等待执行，返回pdostatement对象。
    $stm = $pdo->prepare($sql);
    
    //对应第一种预处理方式的
    $arr = array("11","haha");
    
    $stm->execute($arr);
    echo "执行成功";
            
    ?>

<?php
    $dsn = "mysql:dbname=text_0306;host=localhost";
    $pdo = new PDO($dsn,"root","123");
    

    //第二种预处理方式
    $sql = "insert into minzu values (:code,:name1)";
    
    //将预处理语句发送到服务器等待执行，返回pdostatement对象。
    $stm = $pdo->prepare($sql);
    
    
    //对应第二种预处理方式的
    $arr = array("code"=>"14","name1"=>"十年啊");
    
    $stm->execute($arr);
    echo "执行成功";
            
    ?>

<form action="add.php" method="post">
    <div>代号：<input type="text" name="code" /></div>
    <div>名称：<input type="text" name="name" /></div>
    <input type="submit" value="添加" />
</form>

<?php
$dsn = "mysql:dbname=text_0306;host=localhost";
$pdo = new PDO($dsn,"root","123");

$sql = "insert into nation values(:code,:name1)";

$stm = $pdo->prepare($sql);

$stm->execute($_POST); //$_POST取出的数组正好是关联数组，所以可以直接用