Getting connection failed: php_network_getaddresses: getaddrinfo failed: Name or service not known

Thanks Prerak,

This is the answer, my database is on the same machine so I just needed to edit:

$servername = "localhost"

Now everything is working just fine.

The value you've specified for $servername is not a host name but rather a URL, or resource name. The host name would be just www.url.com.

Of course, as you've already discovered, localhost is the correct host name if the client and server reside on the same box.