I tried adding the "Last updated on" code to my post php. But it appeared without the text "Last updated on, except the date and the author's name. In other words, the line "Last updated on" is missing. The code is still in both the post.php and single post.php. But when checked with Inspect Element, it showed only the date and the author's name. This is the code which I add to php: <?php $u_time = get_the_time('U'); $u_modified_time = get_the_modified_time('U'); if ($u_modified_time >= $u_time + 86400) { echo "Last updated on "; the_modified_time('F jS, Y'); echo ", "; } else {echo "Posted on "; the_time('F jS, Y');} ?>