Changing wp_link_pages() to "Next Page" and "Previous Page" buttons?

Question

Currently I am using <!--nextpage--> to split a post into multiple pages, but I would like to change from Pages: 1 2 3 4 to Next Page and Previous Page links similar to what you see on this multipaged post

In my single.php I have:

<?php wp_link_pages( array( 'before' => '<div class="page-links">' . __( 'Pages:', 'pearl' ), 'after' => '</div>' ) ); ?>

How can I change this to a next and a previous button?

Answer 1

Use the 'next_or_number' parameter:

wp_link_pages( array ( 'next_or_number' => 'next' ) );

See the Codex for details.