Transfers ownership of a post that has been purchased via the myCRED Sell Content add-on to the buyer.

change-post-author-on-purchase

/**
 * Change Post Ownership
 * Changes the post author to the user who purchased the post using
 * the myCRED Sell Content add-on.
 * @requires myCRED 1.6 or higher!
 * @version 1.0
 */
add_filter( 'mycred_add_finished', 'mycred_pro_change_post_author_on_sale', 10, 3 );
function mycred_pro_change_post_author_on_sale( $reply, $request, $mycred ) {

	// Only applicable to post purchases (if approved)
	if ( $request['ref'] != 'buy_content' || $reply === false ) return $reply;

	// Make sure this is not the author payout
	if ( ! isset( $request['data']['seller'] ) ) return $reply;

	extract( $request );

	// Start by getting the post from the reference id
	$post = get_post( absint( $ref_id ) );

	// Make sure the post still exist
	if ( isset( $post->post_author ) && $post->post_author != $user_id ) {

		// Update
		wp_insert_post( array(
			'ID'          => $post->ID,
			'post_author' => $user_id
		) );

	}

	return $reply;

}