How Does Callback Work? To implement postback functionality, you'll need a script on your server that is called when someone votes for you. Below is a PHP example for basic integration based on the default callback. Default Callback: This method works for most of our website users. Simply pass the voter's username/ID along with the vote link. Place your callback URL (web accessible URL of the script you created) within your server settings. Let your users vote using the following URL: [YOUR-SERVER-VOTE-URL]?user=[PLAYER-ID] Replace [YOUR-SERVER-VOTE-URL] with your server setting Replace [PLAYER-ID] with the ID that you use to identify your player <?php #Example PHP Postback Script // Your Database Connection Details $host = 'localhost'; $db_name = ''; $db_user = ''; $db_password = ''; $connection = mysqli_connect($host, $db_user, $db_password); mysqli_select_db($connection, $db_name); // User $userid = isset($_POST['userid']) ? $_POST['userid'] : null; // User IP $userip = isset($_POST['userip']) ? $_POST['userip'] : null; // User voted on Gamehot? 1 = unique vote, 0 = already voted $valid = isset($_POST['voted']) ? (int)$_POST['voted'] : 0; // Make sure the user was not yet rewarded on your system // For example by checking your reward logs if (!is_null($userid) && $valid == 1) { // Make userid safe to use in query $userid = mysqli_real_escape_string($connection, $userid); // COUNT rows where reward_date is today $result = mysqli_query($connection, "SELECT COUNT(*) FROM `reward_log` WHERE `user` = '$userid' AND `reward_date` >= CURDATE()"); $rewarded = mysqli_num_rows($result); // No results means not rewarded yet, so grant reward and set the reward date/time log if(!$rewarded) { // Grant reward, for example vote points mysqli_query($connection, "UPDATE `users` SET `points` = `points` + 1 WHERE `user` = '$userid'"); // Insert log mysqli_query($connection, "INSERT INTO `reward_log` (`user`, `reward_date`) VALUES ('$userid', NOW())"); } } // Close connection mysqli_close($connection); ?> Callback URL * Voter Username/ID Voter IP Start Test