Arc-hive-omeka-theme/view/common/wordpress-menu.phtml

<?php

# Config
$wordpress_site="https://dev.arc-hive.zone";
$wordpress_endpoint="https://dev.arc-hive.zone/wp-json/menus/v1/menus/4";

use Zend\Http\Client;

$items = new ArrayObject;
$items[0] = new ArrayObject(); // top level menu items go here

if ($wordpress_endpoint) {
  $client = new Client($wordpress_endpoint);
  $client->setOptions(array("timeout"=>1));
  $response = $client->send();
  $response_data = json_decode($response->getBody());

  if (!$response->isClientError() && $response_data) {
    foreach ($response_data as $menu_item) {
      $item_url = $menu_item->url;
      if (strtolower($menu_item->title) == 'login') {
        $item_url = "/login";
      }
      $item_title = $menu_item->title;
      if (strtolower($menu_item->title) == 'collections') {
        $item_title = "Project";
        $item_url = $wordpress_site;
      }
      $item = [
        "id" => $menu_item->ID,
        "title" => $item_title,
        "url" => $item_url
      ];
      if (!array_key_exists($menu_item->menu_item_parent, $items)) {
        $items[$menu_item->menu_item_parent] = new ArrayObject();
      }
      $items[$menu_item->menu_item_parent][$menu_item->ID] =$item;
    }
  }
}

//print_r($items);

function render_menu($items, $level_id) {
  echo '<ul>' . PHP_EOL;
  foreach ($items[$level_id] as $menu_item) {
    echo '<li>' . PHP_EOL;
    echo '<a href="'.$menu_item['url'].'">'.$menu_item['title'].'</a>' . PHP_EOL;
    if (array_key_exists($menu_item['id'], $items)) {
        render_menu($items, $menu_item['id']); // render sub menu
    }
    echo '</li>' . PHP_EOL;
  }
  echo '</ul>' . PHP_EOL;
}

render_menu($items, 0);

?>