Force email to be sent to Authorize.net - MemberPress

mepr-force-email-to-authorize-net.php

<?php
// Some processors require email address to be sent
function mepr_array_swap($key1, $key2, $array) {
  $newArray = array();
  foreach($array as $key => $value) {
    if ($key == $key1) {
      $newArray[$key2] = $array[$key2];
    } elseif ($key == $key2) {
      $newArray[$key1] = $array[$key1];
    } else {
      $newArray[$key] = $value;
    }
  }
  return $newArray;
}

function add_email_to_recurring($args, $txn, $sub) {
  $user = new MeprUser($txn->user_id);
  $args['subscription']['customer'] = array('email' => $user->user_email);
  $args['subscription'] = mepr_array_swap('customer', 'billTo', $args['subscription']);
  return $args;
}
add_filter('mepr_authorize_create_subscription_args', 'add_email_to_recurring', 11, 3);

function add_email_to_oneoff($args, $txn) {
  $user = new MeprUser($txn->user_id);
  $args['x_email'] = $user->user_email;
  return $args;
}
add_filter('mepr_authorize_payment_args', 'add_email_to_oneoff', 11, 2);
add_filter('mepr_authorize_auth_card_args', 'add_email_to_oneoff', 11, 2);

This code will work best in a plugin like Code Snippets. In a "run everywhere" snippet type.

Is this still actually needed for the latest versions of Memberpress and its authorize.net integration?

It's typically not required, but some processors force an email to be sent. If you get email errors at checkout, then this may be needed.