[WordPress] Update Author on post update

WP_Change_Author_on_Post_Update.php

<?php

// Change Author on Update
function change_on_edit() {
	global $post;
	$id = $post->ID;
	$original_author = $post-> post_author ;
	$current_author = get_current_user_id();
	if (!wp_is_post_revision($id)) {
		remove_action('publish_post', 'change_on_edit');
		$my_post = array(
			'ID'            => $id,
			'post_author'   => get_current_user_id(),
		);
		wp_update_post( $my_post );
		add_action('publish_post', 'change_on_edit');
	}
}
if (is_admin && 'post.php' == $pagenow) {
	add_action('publish_post', 'change_on_edit');
}

?>