$secret_key = 'JaimSysEoTZo5AHyjTYDrr';
$allowed_ips = array('34.193.235.172'); 
if (!in_array($_SERVER['REMOTE_ADDR'], $allowed_ips)) {    echo 0;    die();}
// Get parameters
$status = $_REQUEST['status'];
$trans_id = $_REQUEST['trans_id'];
$sub_id = $_REQUEST['sub_id'];
$sub_id_2 = $_REQUEST['sub_id_2'];
$sub_id_3 = $_REQUEST['sub_id_3'];
$sub_id_4 = $_REQUEST['sub_id_4'];
$sub_id_5 = $_REQUEST['sub_id_5'];
$gross = $_REQUEST['gross'];
$amount = $_REQUEST['amount'];
$offer_id = $_REQUEST['offer_id'];
$offer_name = $_REQUEST['offer_name'];
$category = $_REQUEST['category'];
$os = $_REQUEST['os'];
$app_id = $_REQUEST['app_id'];
$ip_address = $_REQUEST['ip_address'];
$signature = $_REQUEST['signature'];

// Create validation signature
$validation_signature = md5($sub_id . ':' . $amount . ':' . $secret_key);
if ($signature != $validation_signature) {    echo 0;    die();}     // Signatures not equal - send error code

//credituser
//here