static function update_pages($pages, &$newPages, $navPages)
{
array_walk($newPages, function (&$newPage) use($pages, $newPages, $navPages) {
$nav = pages::gen_nav($navPages, $newPage['url']);
if (isset($newPage['id'])) {
pages::update_page($newPage, util::array_find_prop($pages, 'id', $newPage['id']), $nav);
} else {
pages::create_page($newPage, util::array_find_prop($pages, 'id', $newPage['tid']), $nav);
}
});
}
