PHP display sibling pages as a set image - php

Question

I am trying to customise the following code so it displays all sibling pages of the current page, but instead of outputting them as the title, they are output as bulletpoints (styled bulletpoints so an image, 'images/bulletpoint.gif'). I have the following code that displays them as the names, but can't seem to customise them to display as an image. Any ideas?
Many thanks
<ul class="subnav_right">
<?php
global $post;
$current_page_parent = ( $post->post_parent ? $post->post_parent : $post->ID );
wp_list_pages( array(
'title_li' => '',
'child_of' => $current_page_parent,
'depth' => '1' )
);
?>
</ul>

Answer 1

You can customize using walker.I have done it using walker. check following code:
Walker Class:
class Custom_Walker extends Walker_Page {
function start_el( &$output, $page, $depth, $args, $current_page = 0 ) {
if ( $depth )
$indent = str_repeat("\t", $depth);
else
$indent = '';
extract($args, EXTR_SKIP);
$css_class = array('page_item', 'page-item-'.$page->ID);
if ( !empty($current_page) ) {
$_current_page = get_post( $current_page );
if ( in_array( $page->ID, $_current_page->ancestors ) )
$css_class[] = 'current_page_ancestor';
if ( $page->ID == $current_page )
$css_class[] = 'current_page_item';
elseif ( $_current_page && $page->ID == $_current_page->post_parent )
$css_class[] = 'current_page_parent';
}
elseif ( $page->ID == get_option('page_for_posts') ) {
$css_class[] = 'current_page_parent';
}
$css_class = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
$icon_class = get_post_meta($page->ID, 'icon_class', true); //Retrieve stored icon class from post meta
$output .= $indent . '<li class="' . $css_class . '">';
$output .= '<a href="' . get_permalink($page->ID) . '">' . $link_before;
if($icon_class){ //Test if $icon_class exists
$output .= '<span class="' . $icon_class . '"></span>'; //If it exists output a span with the $icon_class attached to it
}
if($depth!=0){
$output .= apply_filters( 'the_title', '', $page->ID );
}else {
$output .= apply_filters( 'the_title', $page->post_title, $page->ID );
}
$output .= $link_after . '</a>';
if ( !empty($show_date) ) {
if ( 'modified' == $show_date )
$time = $page->post_modified;
else
$time = $page->post_date;
$output .= " " . mysql2date($date_format, $time);
}
}
}
Pass walker in argumnent like:
wp_list_pages( array( 'title_li' => '',
'child_of' => $current_page_parent,
'depth' => '1',
'walker' => new Custom_Walker())
);