MemberPress.com's Google Authorship Customizations

my_google_authorship.php

<?php
// This is the code we use on MemberPress.com to customize the Genesis Author Box
// Uses the 'genesis_author_box' to add Google Authorship

add_filter('genesis_author_box', 'my_author_box_output');

function my_author_box_output( $output, $context, $pattern, $gravatar, $title, $description ) {
  global $post;

  if(isset($post) and $post->post_type=='post')
  {
    $gplus = get_the_author_meta('googleplus');

    if( !empty($gplus) )
      $gravatar = '<a href="'.$gplus.'?rel=author">'.$gravatar.'</a>';

    return sprintf( $pattern, $gravatar, $title, $description );
  }

  return '';
}