Byline Text Missing

I was adding the byline “Last updated on”code onto my post php and I have problem updating or saving it.

Then I installed Theme Editor plugin and I managed to fix this unable-to-edit-files-in-WordPress-editor problem.

But then I realized, the text “Last updated on” is missing, except for the date and the author’s name.

This is the code:

<?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 ” “; the_time(‘F jS Y’);} ?>

By the way, I have no problem doing the same thing for my other site which is having the same theme!

The page I need help with: [log in to see the link]