<?php

    $clientid  = 'a';
    $secretkey = 'b';
    $redirect  = 'http://return.to/apage.php';

    if(isset($_GET['code'])) {
        $code = urlencode($_GET["code"]);
    } else {
        header("Location: https://www.dwolla.com/oauth/v2/authenticate?client_id=".urlencode($clientid)."&response_type=code&redirect_uri=".urlencode($redirect)."&scope=send%7Ctransactions"); exit;
    }

    # fetch auth token

    $url  = "https://www.dwolla.com/oauth/v2/token?client_id=".urlencode($clientid)."&client_secret=".urlencode($secretkey)."&grant_type=authorization_code&code=".$code."&redirect_uri=".urlencode($redirect);
    $tok  = file_get_contents($url);
    $json = json_decode($tok, true);

    # do a send

    $target = 'https://www.dwolla.com/oauth/rest/accountapi/send';
    $array  = array(
        'oauth_token' => $json['access_token'],
        'pin' => '1234',
        'destinationId' => '812-111-1111',
        'amount' => 1,
        'facilitatorAmount' => 0,
        'notes' => 'Test'
    );

    $curl = curl_init($target);
    curl_setopt($curl, CURLOPT_HEADER, false);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array("Content-type: application/json"));
    curl_setopt($curl, CURLOPT_POST, true);
    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($array));

    $response = curl_exec($curl); print_r($response); exit;

    $json = json_decode(curl_exec($curl), true);

    curl_close($curl);

    print_r($json); exit;

?>