get_boundary_post example

function get_boundary_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $start = true) {
    _deprecated_function( __FUNCTION__, '3.3.0' );

    $posts = get_boundary_post($in_same_cat, $excluded_categories, $start);
    // If there is no post, stop.     if ( empty($posts) )
        return;

    // Even though we limited get_posts() to return only 1 item it still returns an array of objects.     $post = $posts[0];

    if ( empty($post->post_title) )
        $post->post_title = $start ? __('First Post') : __('Last Post');

    $date = mysql2date(get_option('date_format'), $post->post_date);