is_post_type_archive and breadcrumbs | WordPress.org

add_filter( 'wpseo_breadcrumb_links', 'yoast_seo_breadcrumb_append_link' );

function yoast_seo_breadcrumb_append_link( $links ) {
    global $post;

    if ( is_singular ('post')|| is_post_type_archive( 'post' ) ) {
        $breadcrumb[] = array(
            'url' => site_url( '/resources/' ),
            'text' => 'All Resources',
        );

        array_splice( $links, 1, -2, $breadcrumb );
    }

    return $links;

Hi, I am trying to add a link to breadcrumbs on posts and post archives only. I have a custom post type that I want to have different links on, so I cannot use is_archive( )

I cannot get is_post_archive to work. can anyone help with ideas on how to fix?

I found this old thread, but I don’t; have the skills to implement or understand how they got the workaround to work.

Any help appreciated!

Thanks,