build_crowdfunding_setup_php.php

// WePay PHP SDK - http://git.io/mY7iQQ
    require 'wepay.php';

    // oauth2 parameters
    <span class="variable">$code</span> = $_GET['code']; // the code parameter from step 2
    <span class="variable">$redirect_uri</span> = "http://www.example.com/oauth2_redirect_uri"; // this is the redirect_uri you used in step 1

    // application settings
    <span class="variable">$client_id</span> = 123456789;
    <span class="variable">$client_secret</span> = "1a3b5c7d9";

    // change to useProduction for live environments
    Wepay::useStaging($client_id, $client_secret);

    $wepay = new WePay(NULL); // we don't have an access_token yet so we can pass NULL here

    // create an account for a user
    $response = WePay::getToken($code, $redirect_uri);

    // display the response
    print_r($response);