Adding Class current_page_item - php

Question

I am working on a Wordpress-Design and i want to creat a Custom Menu.
$items = wp_get_nav_menu_items('Menu', array(
'order' => 'ASC',
'orderby' => 'menu_order',
'post_type' => 'nav_menu_item',
'post_status' => 'publish',
'output' => ARRAY_A,
'output_key' => 'menu_order',
'nopaging' => true,
'update_post_term_cache' => false));
echo '<pre>'; print_r($items); echo '</pre>';
foreach($items as $item){
echo '<div class="menu_entry">'.$item->title.'</div>';
}
The problem is, i need the "current-page"-Class, which is WordPress creating - in the Standard Menu.
Any Ideas how to add this class?

Answer 1

Solution time:
WordPress's function that adds these classes is _wp_menu_item_classes_by_context(). This is called already when you use wp_nav_menu but not wp_get_nav_menu_items. Fortunately, the latter provides a filter so we can do it ourselves:
add_filter( 'wp_get_nav_menu_items', 'prefix_nav_menu_classes', 10, 3 );
function prefix_nav_menu_classes($items, $menu, $args) {
_wp_menu_item_classes_by_context($items);
return $items;
}

Answer 2

You can do a compare on the current page / cat etc ID against the menu items object_id which is the ID of the page / category etc its linked to.
Something like (untested);
global $post;
$thePostID = $post->ID;
foreach($items as $item){
if($thePostID === $item->object_id) {
echo '<div class="menu_entry">'.$item->title.'</div>';
}else{
echo '<div class="menu_entry">'.$item->title.'</div>';
}
}

Answer 3

Using the function get_queried_object_id(). This works fine in all the pages, including the Blog page.
See an example:
if ( $menu_items = wp_get_nav_menu_items( 'menu' ) ) {
foreach ( $menu_items as $menu_item ) {
$current = ( $menu_item->object_id == get_queried_object_id() ) ? 'current' : '';
echo '<li class="' . $current . '">' . $menu_item->title . '</li>';
}
}