function GetOnlinePlayers($ip, $port = 25565) {
     // Create a CURL connection to the API.
     $ch = curl_init('https://mcapi.us/server/status?ip='.$ip.'&port='.$port);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     $results = curl_exec($ch);
     curl_close($ch);

     // Unserialize the JSON output
     $json = json_decode($results, true);

     // Return the online players
     $onlineplayers = $json['players']['now'];
     return $onlineplayers;
   }