edit_form_after_editor only in post edit pages

Question

Often with WP, it really helps to actually locate where and how a hook is called before using it.

If you search the code base for edit_form_after_editor, you’ll locate:

/**
 * Fires after the content editor.
 *
 * @since 3.5.0
 *
 * @param WP_Post $post Post object.
 */
do_action( 'edit_form_after_editor', $post );

As you can see, $post is actually passed as an argument here. To access and use it without any chance of error, pass it to your function:

function myprefix_edit_form_after_editor($post) {
    var_dump($post);

To weed out non-posts, just go something like:

function myprefix_edit_form_after_editor($post) {
    if ($post->post_type != 'post') return;