Author social media aren’t shown on the page

I’m trying to show the authors social medias on the page but they aren’t showed at all. Here is the code that I have so far $website = $user->user_url; if($user->user_url != ”) { printf(‘<a href=”%s”>%s</a>’, $user->user_url, ‘<i class=”icon-home”></i>’); } $twitter = get_user_meta($user->ID, ‘twitter_profile’, true); if($twitter != ”) { printf(‘<a href=”%s”>%s</a>’, $twitter, ‘<i class=”icon-twitter”></i>’); } $facebook…