无法使用php连接到远程数据库

我在Windows中安装了Xampp，并且正在使用Laravel 5.3创建应用程序.我正在尝试在本地网络上的另一台服务器上执行查询，但是当我尝试执行该操作时，MySql服务器对本地服务器上的用户进行身份验证时使用(username: "root" && password:"")，而远程服务器具有(username: "root" && password:"root")和i不知道为什么.这是我在config/database.php下的laravel连接

I have Xampp installed in windows and I am creating an application using Laravel 5.3. I am trying to execute a query on another server on local network but when I try to do that the MySql server authenticate the user that is on my local server with is (username: "root" && password:"") while the remote server have (username: "root" && password:"root") and i don't know why. here is my laravel connection under config/database.php

'smsgateway' => [
                'driver'    => 'mysql',
                'host'      => '**.**.**.**',
                'database'  => 'database',
                'username'  => 'root',
                'password'  => 'root',
                'charset'   => 'utf8',
                'collation' => 'utf8_unicode_ci',
                'prefix'    => '',
                'strict'    => false,
    ],

我如何使用连接

  $smsgateway =  \DB::connection('smsgateway');
        // dd($smsgateway);
        $smsgateway->statement($sql);

我尝试使用本地PHP代码进行连接，但是我遇到的问题是我的代码

I tried to connect using a native PHP code but I face the same problem here is my code

$servername = "**.**.**.**;
$username = "root";
$password = "root";

try {
    $conn = new PDO("mysql:host=$servername;dbname=database", $username,      $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully"; 
    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }

它给了我

连接失败:SQLSTATE [HY000] [1045]用户的访问被拒绝 'root'@'myIPAddress'(使用密码:是)

Connection failed: SQLSTATE[HY000] [1045] Access denied for user 'root'@'myIPAddress' (using password: YES)