PHP的mysqli_stmt_init()函数讲解

<?php
// 假定数据库用户名root，密码123456，数据库codingdict
$con=mysqli_connect("localhost","root","123456","codingdict");
if (mysqli_connect_errno($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);
?>