PHP MySQLi_STMT添加数据

<?php
//预编译
//1.创建mysqli对象
$mysqli = new MySQLi("localhost", "root", "1234", "test");

//2.创建预编译对象
$sql = "insert into user1 (name, password, email, age) values(?, ?, ?, ?)";
$mysqli_stmt = $mysqli->prepare($sql) or die($mysqli->error);

//绑定参数
$name = "小倩";
$password = md5("xiaoqian");
$email = "xiaoqian@qq.com";
$age = 200;
//参数绑定->给？赋值，这里类型和顺序都要对应
//sssi：sss代表第一个、第二个、第三个参数为string型，i代表第四个参数为int型
$mysqli_stmt->bind_param("sssi", $name, $password, $email, $age);

//执行
//execute()返回boolean型
if(!$mysqli_stmt->execute()){
die("操作失败".$mysqli_stmt->error);
}else{
echo "插入成功";
}

//继续添加
$name = "老妖";
$password = md5("laoyao");
$email = "laoyao@qq.com";
$age = 250;
$mysqli_stmt->bind_param("sssi", $name, $password, $email, $age);
//执行
if(!$mysqli_stmt->execute()){
die("操作失败".$mysqli_stmt->error);
}else{
echo "插入成功";
}
//多个添加也可以用while循环添加

//释放资源
$mysqli->close();
?>