Having Fun With Post Dates
Are there posts on your blog you regularly update rather than writing new separate entries such as tutorials for instance? Wouldn't it be nice if there was a way you could let your readers know when a post was updated other than adding an addendum to the bottom? Well there is.
WordPress outputs the date of a post by this tag,
Posted on <?php the_time('F jS, Y') ?>
You will find it any all of the template files that display posts such as index.php, single.php etc. Simply replace that bit of code with this,
Posted on <?php the_time('F jS, Y') ?>
<?php $u_time = get_the_time('U');
$u_modified_time = get_the_modified_time('U');
if ($u_modified_time != $u_time) {
echo " and last modified on ";
the_modified_time('F jS, Y');
echo ". "; } ?>
The result will look like this,


