forse il codice è questo
<?php
/**
* The Template for displaying all single posts.
*
* @package WordPress
* @subpackage Twenty_Eleven
* @since Twenty Eleven 1.0
*/
<g:plusone></g:plusone>
get_header(); ?>
<div id="primary">
<div id="content" role="main">
<g:plusone size=”medium” href=”<?php the_permalink(); ?>”></g:plusone>
<?php while ( have_posts() ) : the_post(); ?>
<nav id="nav-single">
<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentyeleven' ); ?></h3>
<span class="nav-previous"><?php previous_post_link( '%link', __( '<span class="meta-nav">←</span> Previous', 'twentyeleven' ) ); ?></span>
<span class="nav-next"><?php next_post_link( '%link', __( 'Next <span class="meta-nav">→</span>', 'twentyeleven' ) ); ?></span>
</nav><!-- #nav-single -->
<?php get_template_part( 'content', 'single' ); ?>
<?php comments_template( '', true ); ?>
<?php endwhile; // end of the loop. ?>
</div><!-- #content -->
</div><!-- #primary -->
<?php get_footer(); ?>