PHP mysqli_get_host_info() 函数

返回 MySQL 服务器主机名和连接类型：

   <?php
   $con=mysqli_connect("localhost","my_user","my_password","my_db");
   // 检测连接
   if (mysqli_connect_errno($con))
   {
        echo "数据库连接失败: " . mysqli_connect_error();
   }
  
  echo mysqli_get_host_info($con);
  
  mysqli_close($con);
   ?>