$url = "https://push-api.sare.pl/v1/segments/<YOUR_WEBSITE_UID>";
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Authorization: Basic <YOUR_API_KEY>']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);