PDO

 

 

<?php //造DSN：驅動名:dbname=數據庫名;host=服務器地址
$dsn = "mysql:dbname=mydb;host=localhost";
//造PDO對象
$pdo = new PDO($dsn,"root","123");

//寫SQL語句
$sql = "select * from Info";

//執行SQL語句
//$v = $pdo->query($sql);
//返回的對象比較特殊，能夠直接用循環遍歷
/*foreach($v as $a)
{
    echo $a[0];
}*/

//預處理，先把SQL語句放到服務器上等待咱們給他指令去執行
//準備一條SQL語句
$stm = $pdo->prepare($sql);

//執行準備好的SQL語句,成功返回true，失敗返回false
if($stm->execute())
{
    //1.逐行取數據
    //var_dump($stm->fetch());
    //2.取全部的
    //var_dump($stm->fetchAll(PDO::FETCH_OBJ));
    //3.取某一列
    //var_dump($stm->fetchColumn(1));
    //4.返回對象
    //var_dump($stm->fetchObject());
    
}
else
{
    echo "執行失敗！";
}

?>

<?php

//造對象
$dsn = "mysql:dbname=mydb;host=localhost";
$pdo = new PDO($dsn,"root","123");

//寫SQL語句,參數用?來代替
//$sql = "insert into Nation values(?,?)";
$sql = "insert into Nation values(:code,:name)";
//預處理
$stm = $pdo->prepare($sql);

//給參數綁定值
/*$stm->bindParam(1,$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";*/

//造數組
//$attr  = array("p101","很快");
//$attr  = array("code"=>"p103","name"=>"shj");

//執行
if($stm->execute($_POST))
{
    echo "添加成功";
}
else
{
    echo "添加失敗";
}

?>