Yoast SEO breadcrumb 調整

//yoast breadcrumb product
add_filter( 'wpseo_breadcrumb_links', 'wpse_100012_override_yoast_breadcrumb_trail' );

function wpse_100012_override_yoast_breadcrumb_trail( $links ) {
    global $product;

    if ( is_singular( 'product' ) ) {
        $breadcrumb[] = array(
            'url' => get_permalink( get_option( '' ) ),
            'text' => '',
        );

        array_splice( $links, 1, -3, $breadcrumb );
    }

    return $links;
}