Display last date a post was updated on WordPress - php

Question

I'm using some PHP to display the last time a blog post was updated on WordPress using the get_the_time and get_the_modified_time functions. However, I can't get the last modified time to display inline in the paragraph.
<?php
$x = get_the_time('U');
$m = get_the_modified_time('U');
if ($m != $x) {
$t = the_modified_time('F d, Y');
echo "<p class=\"lastupdated\">Updated on $t </p>";
}
?>
Here's a screenshot of the result:

Answer 1

the_modified_time prints the last modification time, so it prints it before you print your <p>.
Instead you'll want to use get_the_modified_time for setting $t, like so:
$t = get_the_modified_time('F d, Y');

Answer 2

It's probably because these functions don't return the result but echo it directly. Thus you must call them at the spot you need them to be.

Answer 3

<?php
$x = get_the_time('U');
$m = get_the_modified_time('U');
if ($m != $x) {
echo "<p class=\"lastupdated\">Updated on ".the_modified_time('F d, Y')."</p>";
}
?>

Answer 4

You can also display the last modified time of a post through this code by placing it anywhere in your loop.
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 ". ";
} ?>

Answer 5

This is the complete code based on the above comments. Now it works and you just need to add this to your post template: Snippet (1)
<?php
$x = get_the_time('U');
$m = get_the_modified_time('U');
if ($m != $x) {
$t = get_the_modified_time('F d, Y');
echo "<p class=\"lastupdated\">Updated on $t </p>";
}
?>
For example, suppose that your post template is called content-post.php. Look for a part that looks like the below: Snippet (2)
// Post date
if ( in_array( 'post-date', $post_meta_top ) ) : ?>
<?php the_time( get_option( 'date_format' ) ); ?>
<?php endif;
Insert snippet (2) immediately before the closing tag of snippet (1) as follows:
<?php
// Post date
if ( in_array( 'post-date', $post_meta_top ) ) : ?>
<?php the_time( get_option( 'date_format' ) ); ?>
<?php
$x = get_the_time('U');
$m = get_the_modified_time('U');
if ($m != $x) {
$t = get_the_modified_time('F d, Y');
echo "<p class=\"lastupdated\">Updated on $t </p>";
}
?>
<?php endif;
Now, you will get the original post date and the updated post date. Special thanks go to #Sebastian Paaske Tørholm for his comment.