function add_mod_hatom_data($content) { $iso8601_date = get_the_time('c'); $author = get_the_author(); $title = get_the_title(); if( is_single() || is_page() ) { $content .= '
'.$title.' ultima modifica: '.$iso8601_date.' da '.$author.'
'; } return $content; } add_filter('the_content', 'add_mod_hatom_data');