$view = new view;
$view->name = 'Test';
$view->description = 'Testing';
$view->tag = '';
$view->view_php = '';
$view->base_table = 'node';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('relationships', array(
  'field_city_nid' => array(
    'label' => 'City',
    'required' => 0,
    'delta' => '-1',
    'id' => 'field_city_nid',
    'table' => 'node_data_field_city',
    'field' => 'field_city_nid',
    'relationship' => 'none',
  ),
));
$handler->override_option('fields', array(
  'title' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_node' => 1,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('arguments', array(
  'title' => array(
    'default_action' => 'ignore',
    'style_plugin' => 'default_summary',
    'style_options' => array(),
    'wildcard' => 'all',
    'wildcard_substitution' => 'All',
    'title' => '%1',
    'breadcrumb' => '',
    'default_argument_type' => 'fixed',
    'default_argument' => '',
    'validate_type' => 'none',
    'validate_fail' => 'not found',
    'glossary' => 0,
    'limit' => '0',
    'case' => 'none',
    'path_case' => 'lower',
    'transform_dash' => 1,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'validate_user_argument_type' => 'uid',
    'validate_user_roles' => array(
      '2' => 0,
      '3' => 0,
      '4' => 0,
    ),
    'relationship' => 'field_city_nid',
    'default_options_div_prefix' => '',
    'default_argument_user' => 0,
    'default_argument_fixed' => '',
    'default_argument_php' => '',
    'validate_argument_node_type' => array(
      'webform' => 0,
      'product' => 0,
      'accommodation' => 0,
      'activity' => 0,
      'tour' => 0,
      'vehicle_hire' => 0,
      'airport' => 0,
      'city' => 0,
      'country' => 0,
      'flight' => 0,
      'howto' => 0,
      'internet_cafe' => 0,
      'option' => 0,
      'page' => 0,
      'price_request' => 0,
      'special_offer' => 0,
    ),
    'validate_argument_node_access' => 0,
    'validate_argument_nid_type' => 'nid',
    'validate_argument_vocabulary' => array(
      '2' => 0,
      '4' => 0,
      '5' => 0,
      '3' => 0,
      '1' => 0,
    ),
    'validate_argument_type' => 'tid',
    'validate_argument_transform' => 0,
    'validate_user_restrict_roles' => 0,
    'validate_argument_php' => '',
    'override' => array(
      'button' => 'Override',
    ),
  ),
));
$handler->override_option('filters', array(
  'status' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'status',
    'table' => 'node',
    'field' => 'status',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'type' => array(
    'operator' => 'in',
    'value' => array(
      'accommodation' => 'accommodation',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'type',
    'table' => 'node',
    'field' => 'type',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('cache', array(
  'type' => 'none',
));
$handler->override_option('title', 'All Nodes');
$handler->override_option('items_per_page', 0);
$handler->override_option('style_plugin', 'list');
$handler->override_option('style_options', array(
  'grouping' => '',
  'type' => 'ul',
));
$handler = $view->new_display('page', 'All', 'page_1');
$handler->override_option('path', 'test/all');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
));
$handler = $view->new_display('page', 'Cities', 'page_3');
$handler->override_option('relationships', array());
$handler->override_option('fields', array(
  'title' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 1,
      'path' => 'map/all/[title]',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_node' => 0,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'override' => array(
      'button' => 'Use default',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('arguments', array());
$handler->override_option('filters', array(
  'status' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'status',
    'table' => 'node',
    'field' => 'status',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'type' => array(
    'operator' => 'in',
    'value' => array(
      'city' => 'city',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'type',
    'table' => 'node',
    'field' => 'type',
    'override' => array(
      'button' => 'Use default',
    ),
    'relationship' => 'none',
  ),
  'nid_php' => array(
    'operator' => 'OR',
    'value' => '$nodes = array();

$city_view = views_get_view(\'Test\');
$city_view->set_item(\'page_3\', \'filter\', \'nid_php\', NULL);
$city_view->set_display(\'page_3\');
$city_view->set_arguments(array());
$city_view->pre_execute();
$city_view->execute();

foreach ($city_view->result as $city) {
  $accommodation_view = views_get_view(\'Test\');
  $accommodation_view->set_display(\'page_1\');
  $accommodation_view->set_arguments(array($city->node_title));
  $accommodation_view->pre_execute();
  $accommodation_view->execute();

  if (!empty($accommodation_view->result)) {
    $nodes[] = $city->nid;
  }

  $accommodation_view->destroy();
}

$city_view->destroy();
return $nodes;
//return array();',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'handler' => 'php',
    'id' => 'nid_php',
    'table' => 'node',
    'field' => 'nid_php',
    'override' => array(
      'button' => 'Use default',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('title', 'City Nodes');
$handler->override_option('path', 'test/cities');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
));