Removing “HTTP://” From the_author_meta?

Assuming that the author’s id is $author_id, the following code should work. You can of course use this to create your own function.

<?php $url = get_the_author_meta('user_url', $author_id); ?>
<a href="https://wordpress.stackexchange.com/questions/26599/<?php echo $url; ?>"><?php echo str_replace('http://', '', $url);?></a>