PHP mysqli_stmt_init()Functions

PHP MySQLi Reference Manual

Initializes a statement and returns an object for use with mysqli_stmt_prepare():

<?php 
// 假定数据库用户名：root，密码：123456，数据库：EXAMPLE 
$con=mysqli_connect("localhost","root","123456","EXAMPLE"); 
if (mysqli_connect_errno($con)) 
{ 
    echo "连接 MySQL 失败: " . mysqli_connect_error(); 
} 
// 修改数据库连接字符集为 utf8
mysqli_set_charset($con,"utf8");

$country="CN";

// 创建预处理语句
$stmt=mysqli_stmt_init($con);

if (mysqli_stmt_prepare($stmt,"SELECT name FROM websites WHERE country=?"))
{
    
    // 绑定参数
    mysqli_stmt_bind_param($stmt,"s",$country);
    
    // 执行查询
    mysqli_stmt_execute($stmt);
    
    // 绑定结果变量
    mysqli_stmt_bind_result($stmt,$name);
    
    // 获取值
    mysqli_stmt_fetch($stmt);
    
    printf("%s 国家的网站为：%s",$country,$name);
    
    // 关闭预处理语句
    mysqli_stmt_close($stmt);
}

mysqli_close($con);
?>

Definition and Usage

The mysqli_stmt_init() function initializes a statement and returns an object for use with mysqli_stmt_prepare().

Syntax

Technical Details

PHP MySQLi Reference Manual