brandt.php

<?php

// Param check / validation
    if (!isset($_POST['email']) || !isset($_POST['zip']))
        wp_send_json(array('is_true' => FALSE, 'Not enough params sent.'));

    // Rate Limit:  100 requests to a nation every 10 seconds.
    // Expiration: Check on this
    $access_token = 'TOKEN_GOES_HERE';
    $nation = 'scotch';



    //put in your nation slug and token
    $endpoint = 'https://'.$nation.'.nationbuilder.com/api/v1/people?access_token='.$access_token;

    // Get request
    $data = array(
        'person' => array(
            'email' => $_POST['email'],
            'registered_address' => array(
                'zip' => $_POST['zip']
            )
        ),
    );

    $ch = curl_init($endpoint);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
    curl_setopt($ch, CURLOPT_TIMEOUT, '10');
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        'Content-Type: application/json',
        'Accept: application/json'
        )
    );

    $json_data = json_encode($data);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);

    $json_response = curl_exec($ch);
    curl_close($ch);

    $response = json_decode($json_response, TRUE);

    if ($response) :
        wp_send_json(array(
            'is_true' => TRUE,
            'message' => 'User saved to NationBuilder'
        ));
    else :
        wp_send_json(array(
            'is_true' => FALSE,
            'message' => 'User not saved to NationBuilder'
        ));
    endif;



  ////// IMPORTANT ////////////////
  // IF this isn't in wordpress you'll need to uncomment this
//   function wp_send_json($data) {
//     header('Content-Type: application/json');
//     echo json_encode($data);
//     exit;;
//   }