$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.roaring.io/token");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "scope=PRODUCTION&grant_type=client_credentials&client_secret=*secret*&client_id=*id*");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$headers = [
'Cache-Control' => 'no-cache',
'Content-Type' => 'application/x-www-form-urlencoded',
'authorization' => 'Basic Base64(consumer-key:*secret*)'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$server_output = curl_exec($ch);