wordpress-selling-point-sidemenu

                        <?php
                            //if the post has a parent
                            if($post->post_parent){
                            //collect ancestor pages
                            $relations = get_post_ancestors($post->ID);
                            //get child pages
                            $result = $wpdb->get_results( "SELECT ID FROM wp_posts WHERE post_parent = $post->ID AND post_type='page'" );
                                if ($result){
                                    foreach($result as $pageID){
                                        array_push($relations, $pageID->ID);
                                    }
                                }
                            //add current post to pages
                            array_push($relations, $post->ID);
                            //get comma delimited list of children and parents and self
                            $relations_string = implode(",",$relations);
                            //use include to list only the collected pages.
                            $sidelinks = wp_list_pages("title_li=&echo=0&include=".$relations_string);
                            }else{
                            // display only main level and children
                            $sidelinks = wp_list_pages("title_li=&echo=0&depth=3&child_of=".$post->ID);
                            }

                            if ($sidelinks) { ?>
                                <ul class="left-nav">
                                    <li><a class="stand-alone" href="<?php echo get_permalink(); ?>"><?php the_title(); ?></a></li>
                                    <?php //links in <li> tags
                                    echo $sidelinks; ?>
                                </ul>
                            <?php }
                                else { ?>
                                    <ul class="left-nav">
                                    <li><a class="stand-alone" href="<?php echo get_permalink(); ?>"><?php the_title(); ?></a></li>
                                    </ul>
                            <?php } ?>