How do I tag every author in their posts that they have made previously

Question

So here is the situation, I have a wordpress blog site that is a few years old, and every user had a different account to post with.

Now what i want is a plugin/script that automatically adds the name of each author as a tag or a category.

So for example if 'Andre' was the author of a blogpost made on my site a few years ago, he should be tagged in that blogpost Tags: Andre, another thing tagged before, etc

The solution needs to work for posts previously made.

Thanks!

Answer 1

I would do this by looking into the wp_get_post_revisions

---

So put this in your functions.php:

function show_revisions( $revisions ){
  echo '<ul>';
  foreach( $revisions as $revision ):

    // Gets the author if there is one.
    // Prints (??) if there isn't one.
    $author = empty( ucfirst( get_the_author_meta( 'display_name', $post_author ) ) ) ? '(??)' : ucfirst( get_the_author_meta( 'display_name', $revision->post_author ) );

      echo '<li>';
      echo '<p>Author:' . $author . '</p>';
      echo '</li>';
  endforeach;
  echo '</ul>';
}

---

And put this in your single.php and/or page.php and/or whereever you want the list of authors to be shown:

$revisions = wp_get_post_revisions();
show_revisions( $revisions );