如何通过Xampp连接到我的远程Mysql数据库

I am using Xampp to update my website and since I have added a Mysql database I have the error further down locally while it works fine online.

I'm using the code below to connect to my database:

<?php
$servername = "myservername";
$username = "myusername";
$password = "mypassword";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
?> 

http://localhost/connectdb.php

Result:

Connection failed: php_network_getaddresses: getaddrinfo failed: No such host is known.

http://example.com/connectdb.php

Result:

Connected successfully

So there must be some configuration to do in Xampp to access a remote database or do I need to ask my host to whitelist my private IP Address? My host is OVH.

Thanks for your help