PHP-created URLs dont get converted

I have a custom self-made php code in header and footer for social sharing, that generates proper sharing links on my pages (plenty of people use similar code or plugins for the same purposes). However, SS seems to ignore it completely, and the links in generated static pages are empty. Adding them manually is not an option since I have over 200 pages in my website.

There are
echo urlencode( get_permalink() );
and
echo htmlspecialchars( urlencode( html_entity_decode( get_the_title() . ' - ' ) ) );