Adding more links to the tool bar

So what you need to do is repeat what you’re doing, and we’ll use a foreach loop to achieve it

I’ll give you an example of code that basically does what you need, but it creates an array of arrays. You initially created array called $args which represented a single link, but you need to create an array these $args.

Once you create the array of $args, you can run over the array using a foreach and add the nodes to the menu.

function add_link_to_admin_bar( $admin_bar ) {
    
    $links = [
        [
            'parent' => 'site-name',
            'id'     => 'Lignano_Sabbiadoro',
            'title'  => 'Lignano Sabbiadoro',
            'href'   => '/case-vacanza/lignano-sabbiadoro-appartamenti-vacanze/',
            'meta'   => [
                'target' => '_self',
            ]
        ],
        [
            'parent' => 'site-name',
            'id'     => 'My_Second_Link_2',
            'title'  => 'My Second Link',
            'href'   => '/case-vacanza/link-2/',
            'meta'   => [
                'target' => '_self',
            ]
        ],
        [
            'parent' => 'site-name',
            'id'     => 'My_Third_Link_3',
            'title'  => 'My Third Link',
            'href'   => '/case-vacanza/link-3/',
            'meta'   => [
                'target' => '_self',
            ]
        ],
    ];

    foreach ( $links as $link ) {
        $admin_bar->add_node( $link );
    }
}

add_action( 'admin_bar_menu', 'add_link_to_admin_bar', 999 );