Server Setup

Overview

Peanut Labs requires that you integrate their server-side callback and store the data from the callback in a database on your server. You can then retrieve the data from the app to verify if a user earned a reward.

The examples below are just a guideline to getting started. There are numerous ways to implement this functionality and naturally we can't list them all. Please see the Peanut Labs server callback documentation for further information.

Examples

<?php

$db = new mysqli('localhost', 'YOURDATABASEUSER', 'YOURDATABASEUSERPASSWORD', 'YOURDATABASE');
if (!$db) {
    // Can't connect to the database
    echo( 0 );
}

define("TABLE_NAME", "peanutlabs"); // Database table name (change for your needs)

define("APPLICATION_KEY", 'Your_Application_Key'); // Your Peanut Labs application key
define("TRANSACTION_KEY", 'Your_Transaction_Key'); // Your Peanut Labs transaction key
define("PUBLISHER_ID", "Your_App_ID");  // Your Peanut Labs app ID

$transactionHash = $_GET['txnHash'];
$oidHash = $_GET['oidHash'];

$cmd = $_GET['cmd'];
$endUserId = $_GET['endUserId']; // 'sample_user_id';
$status = $_GET['status']; // Transaction status
$surveyId = $_GET['offerInvitationId']; // Survey ID
$currencyAmount = $_GET['currencyAmt'];
$transactionId = $_GET['transactionId'];
$publisherCut = $_GET['amt'];

$myTransactionHash = md5($transactionId . TRANSACTION_KEY);
$myOidHash = md5($surveyId . APPLICATION_KEY);

if ($myTransactionHash == $transactionHash) {
    // Transaction hash is valid
} else {
    // Invalid transaction hash
    //echo( "invalid transation hash - " . $myTransactionHash . " " . $transactionHash );
    echo( 0 );
    exit;
}

if ($myOidHash == $oidHash) {
    // OID hash is valid
} else {
    // Invalid OID hash
    //echo( "invalid OID hash" );
    echo( 0 );
    exit;
}

// Update DB with $publisherCut
// Escape the strings to prevent SQL injection attacks
$kEndUserId = $db->real_escape_string($endUserId);
$kStatus = $db->real_escape_string($status);
$kSurveyId = $db->real_escape_string($surveyId);
$kCurrencyAmount = (int)$db->real_escape_string($currencyAmount);
$kTransactionId = $db->real_escape_string($transactionId);
$kPublisherCut = (float)$db->real_escape_string($publisherCut);

// Set the values to insert into the database
$now = time();
$query = $db->prepare("INSERT INTO " . TABLE_NAME . " (userId, status, surveyId, currencyAmount, transactionId, publisherCut, timestamp) VALUES ( ?, ?, ?, ?, ?, ?, ?);" );
$query->bind_param("sssisd", $kEndUserId, $kStatus, $kSurveyId, $kCurrencyAmount, $kTransactionId, $kPublisherCut, $now);

// Execute the query
$result = $query->execute();
if(!$result) {
    //echo( "DB query failed" );
    echo(0);
    exit;
}

echo(1);
?>

<?php

$db = new mysqli('localhost', 'YOURDATABASEUSER', 'YOURDATABASEUSERPASSWORD', 'YOURDATABASE');
if (!$db) {
    // Can't connect to the DB
    trigger_error( "Cannot connect to the DB" );
}

define("TABLE_NAME", "peanutlabs"); // Database table name (change for your needs)

define("APPLICATION_KEY", 'Your_Application_Key'); // Your Peanut Labs application key
define("TRANSACTION_KEY", 'Your_Transaction_Key'); // Your Peanut Labs transaction key
define("PUBLISHER_ID", "Your_App_ID");  // Your Peanut Labs app ID

// Get the user ID passed to the GET call, for example "http://yoursite.com/getUser.php?userId=User_Id_Here"
$kEndUserId = $db->real_escape_string( $_GET['userId'] );

// Create an array to hold the rows
$rows = array();

// Get the SQL column
$queryString = "SELECT * FROM peanutlabs WHERE userId = '" . $kEndUserId . "' ORDER BY timestamp DESC LIMIT 1";

$result = $db->query( $queryString );
if ($result) {
    // Fetch associative array
    $i = 1;
    while ($row = $result->fetch_assoc()) {
        $rows[$i++] = $row;
    }
    $result->free();
    // Close connection
    $db->close();
    // Return the data
    echo json_encode($rows);        
} else {
    trigger_error('Query failed: ' . $queryString . ' Error: ' . $db->error, E_USER_ERROR);
}
?>

CREATE TABLE IF NOT EXISTS `peanutlabs` (
    `id` mediumint(9) NOT NULL AUTO_INCREMENT,
    `userId` text COLLATE utf8_unicode_ci NOT NULL,
    `status` char(1) COLLATE utf8_unicode_ci NOT NULL,
    `surveyId` text COLLATE utf8_unicode_ci NOT NULL,
    `currencyAmount` int(11) NOT NULL,
    `transactionId` text COLLATE utf8_unicode_ci NOT NULL,
    `publisherCut` float NOT NULL,
    `timestamp` int(11) NOT NULL,
    UNIQUE KEY `id` (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=10 ;