if (is_related_entries_visible()): ?> ... <?php endif //is_related_entries_visible ?>

// または

if (is_related_entries_visible()): ?> <aside id="related-entries" class="related-entries<?php echo get_additional_related_entries_classes(); ?>"> <h2 class="related-entry-heading"> <span class="related-entry-main-heading main-caption"> <?php echo get_related_entry_heading(); ?> </span> <?php if (get_related_entry_sub_heading()): ?> <span class="related-entry-sub-heading sub-caption"><?php echo get_related_entry_sub_heading(); ?></span> <?php endif ?> </h2> <div class="related-list"> <?php ... ?> </div> </aside> <?php endif //is_related_entries_visible ?>