mysqli扩展库的 预处理技术 mysqli stmt

 1 <?php
 2        //预编译演示
 3        //需求: 请使用预处理的方式，向数据库添加三个用户
 4        //1.创建mysqli对象
 5        $mysqli=new MySQLi("localhost","root","hsp123","test");
 6        //2.创建预编译对象
 7        $sql="insert into user1 (name,password,email,age) values(?,?,?,?)";
 8        $mysqli_stmt=$mysqli->prepare($sql) or die($mysqli->error);
 9        //绑定参数
10        $name="小倩";
11        $password="xiaoqian";
12        $email="aa@sohu.com";
13        $age="200";
14        //参数绑定->给?赋值,这里类型和顺序都要对应.
15        //
16        $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
17        //执行
18        $b=$mysqli_stmt->execute();
19       
20        //继续添加
21        $name="老妖";
22        $password="laoyao";
23        $email="laoyao@sohu.com";
24        $age="210";
25        $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
26        //执行
27        $b=$mysqli_stmt->execute() ;
28       
29        //继续添加
30        $name="菜层";
31        $password="aaa";
32        $email="aa@sohu.com";
33        $age="30";
34        $mysqli_stmt->bind_param("sssi",$name,$password,$email,$age);
35        //执行
36        $b=$mysqli_stmt->execute();
37        if(!$b){
38               die("操作失败".$mysqli_stmt->error);
39        }else{
40               echo "操作ok";
41        }
42        //释放
43        $mysqli->close();
44 ?>