<?php
/*
Plugin Name: Datos estructurados
Plugin URI: http://www.cicklow.com/
Description: Permite colocar automaticamente los datos estructurados sin tocar un $$$$ code...
Version: 0.01 PEPE
Author: Cicklow
Author URI: http://www.cicklow.com/
*/
function add_suf_hatom_data($content) {
    $t = get_the_modified_time('F jS, Y');
    $author = get_the_author();
    $title = get_the_title();
if (is_home() || is_singular() || is_archive() ) {
        $content .= '<div class="hatom-extra" style="display:none;visibility:hidden;"><span class="entry-title">'.$title.'</span> was last modified: <span class="updated"> '.$t.'</span> by <span class="author vcard"><span class="fn">'.$author.'</span></span></div>';
    }
    return $content;
    }
add_filter('the_content', 'add_suf_hatom_data');
?>