1、使用mysqli擴展庫 預處理技術 mysqli stmt 向數據庫添加3個用戶

<?php
    //mysqli擴展庫 預處理技術 mysqli stmt 向數據庫添加3個用戶
    //1、創建mysqli對象
    $mysqli = new MySQLi("localhost","root","root","test");
    if($mysqli->connect_error){
        die($mysqli->conncet_error);
    }
    //2、創建預編譯對象
    $sql="insert into user1(name,password,email,age) values(?,?,?,?)";
    $mysqli_stmt=$mysqli->prepare($sql);
    //綁定參數
    $name="小芳";
    $password="123456";
    $email="[email protected]";
    $age=18;

    //參數綁定->給？號賦值 這里類型和順序要一致
    $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
    //執行
    $b=$mysqli_stmt->execute();
    //繼續添加
    $name="小楊";
    $password="123456";
    $email="[email protected]";
    $age=18;

    //參數綁定->給？號賦值 這里類型和順序要一致
    $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
    //執行
    $b=$mysqli_stmt->execute();   
    //繼續添加
    $name="小G";
    $password="123456";
    $email="[email protected]";
    $age=18;

    //參數綁定->給？號賦值 這里類型和順序要一致
    $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
    //執行
    $b=$mysqli_stmt->execute();   
    if(!$b){
        echo "操作失敗".$mysqli_stmt->error;
    }else{
        echo "操作成功";
    }
    //關閉預編譯
    $mysqli_stmt->close();
    $mysqli->close();
?>

2、使用預處理查詢id>5的用戶id name email

<?php
    //使用預處理查詢id>5的用戶id name email
    $mysqli=new MySQLi("localhost","root","root","test");
    if($mysqli->connect_error){
        die($mysqli->connect_error);
    }
    //創建預編譯對象
    $sql="select id,name,email from user1 where id>?";
    $mysqli_stmt=$mysqli->prepare($sql);

    $id=5;
    //綁定參數
    $mysqli_stmt->bind_param("i",$id);
    //綁定結果集
    $mysqli_stmt->bind_result($id,$name,$email);
    //執行
    $mysqli_stmt->execute();
    //取出綁定的值
    while($mysqli_stmt->fetch()){
        echo "<br/>$id--$name--$email";
    }

    //關閉資源
    //釋放結果
    $mysqli_stmt->free_result();
    //關閉與編譯語句
    $mysqli_stmt->close();
    //關閉連接
    $mysqli->close();
?>

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