PHP mysqli擴(kuò)展庫(kù) 預(yù)處理技術(shù)的使用分析_MySQL教程

//mysqli擴(kuò)展庫(kù) 預(yù)處理技術(shù) mysqli stmt 向數(shù)據(jù)庫(kù)添加3個(gè)用戶
//1、創(chuàng)建mysqli對(duì)象
$mysqli = new MySQLi("localhost","root","root","test");
if($mysqli->connect_error){
die($mysqli->conncet_error);
}
//2、創(chuàng)建預(yù)編譯對(duì)象
$sql="insert into user1(name,password,email,age) values(?,?,?,?)";
$mysqli_stmt=$mysqli->prepare($sql);

//綁定參數(shù)
$name="小芳";
$password="123456";
$email="xiaofang@126.com";
$age=18;

//參數(shù)綁定->給？號(hào)賦值 這里類型和順序要一致
$mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);

//執(zhí)行
$b=$mysqli_stmt->execute();

//繼續(xù)添加

$name="小楊";
$password="123456";
$email="xiaoyang@126.com";
$age=18;

//參數(shù)綁定->給？號(hào)賦值 這里類型和順序要一致
$mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);

//執(zhí)行
$b=$mysqli_stmt->execute();

//繼續(xù)添加

$name="小G";
$password="123456";
$email="xiaoG@126.com";
$age=18;

//參數(shù)綁定->給？號(hào)賦值 這里類型和順序要一致
$mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);

//執(zhí)行
$b=$mysqli_stmt->execute();

if(!$b){
echo "操作失敗".$mysqli_stmt->error;
}else{
echo "操作成功";
}
//關(guān)閉預(yù)編譯
$mysqli_stmt->close();
$mysqli->close();
?>

//使用預(yù)處理查詢id>5的用戶id name email
$mysqli=new MySQLi("localhost","root","root","test");
if($mysqli->connect_error){
die($mysqli->connect_error);
}

//創(chuàng)建預(yù)編譯對(duì)象
$sql="select id,name,email from user1 where id>?";
$mysqli_stmt=$mysqli->prepare($sql);

$id=5;
//綁定參數(shù)
$mysqli_stmt->bind_param("i",$id);
//綁定結(jié)果集
$mysqli_stmt->bind_result($id,$name,$email);
//執(zhí)行
$mysqli_stmt->execute();

//取出綁定的值
while($mysqli_stmt->fetch()){
echo "<br/>$id--$name--$email";
}

//關(guān)閉資源
//釋放結(jié)果
$mysqli_stmt->free_result();
//關(guān)閉與編譯語(yǔ)句
$mysqli_stmt->close();
//關(guān)閉連接
$mysqli->close();

?>