How to add nofollow and noindex in php code?

Question

This is my code, how can I add nofollow and noindex on social links?

<?= wp_nav_menu([
                'menu' => 'social_links',
                'menu_class' => 'social-links',
                'container' => false,
                'echo' => false,
                'depth' => 1,
                'items_wrap' => '<ul class="%2$s">%3$s</ul>',
                'item_spacing' => 'discard',
                'link_before' => '',
                'link_after' => '',
            ]) . "\n" ?>

Answer 1

Add this & it will work fine.

header("X-Robots-Tag: noindex, nofollow", true);