card/link.php

<?php
// 获取传递的ID
$id = $_GET['id'];
include_once("./untils/conn.php");// 引入数据库连接配置文件

$sql = "SELECT * FROM list WHERE id =" . $id;
$result = mysqli_query($con, $sql);

if ($result) {
  $row = mysqli_fetch_assoc($result);
  $downtel = $row['downtel'];
  
  switch ($downtel) {
    case 'one':
      include 'one.php';
      break;
    case 'two':
      include 'two.php';
      break;
    default:
      include 'one.php';
      break;
  }
} else {
  // 处理查询失败的情况
}

// 关闭数据库连接
mysqli_close($con);
?>