Send post's url to third party server when post is published

Hi,
I’m working on a simple plugin that would send to my server the url of a post when an admin hits publish.
I’ve seen that I could do that via email, but is there a way to push this url directly to a table on my server?
Thanks!
PS: I’m new to web development 😉

Here’s how I’d do it via email, but I’m not even sure it would work:

function email_friends($post_ID)  {
    $email = '[email protected]';
    $url = get_permalink();
    mail($email, "new url",
      '$url');
    return $post_ID;
}