Gets user data in the form of an array with user meta attached, empty results filtered, and single results collapsed into a single value in WordPress

wp_get_account_info.php

<?php
// Gets user data in the form of an array with user meta attached that has empty results filtered,
// and optionally single results collapsed into a single value and/or only single values returned.
function get_account_info($user_id = null, $collapse = true, $single = false) {
  if (!$user_id) $user_id = get_current_user_id();

  $user = get_userdata($user_id);

  if (!$user) return false;

  $user = $user->to_array();
  $user['meta'] = array_filter(array_map(function ($m) use ($collapse, $single) {
    if ($single || ($collapse && count($m) === 1)) return $m[0];
    return $m;
  }, get_user_meta($user_id)));

  return $user;
}
?>