Show parent while on child page

I use this to show subpages of a parent page even while on a subpage. Maybe it will help

<?php
	$subpages = (wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0')) ? wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0') : wp_list_pages('title_li=&child_of='.$post->post_parent.'&echo=0') ;
	if ($subpages)
	{
?>
<h3>Sub-pages</h3>
<ul class="list-page">
	<?php echo $subpages; ?>
</ul>
<?php
	}
?>

Sorry. That code is no good. I meant:

<?php
	$subpages = ($post->post_parent) ? wp_list_pages('title_li=&child_of='.$post->post_parent.'&echo=0') : wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0') ;
	if ($subpages)
	{
?>
<h3>Sub-pages</h3>
<ul class="list-page">
	<?php echo $subpages; ?>
</ul>
<?php
	}
?>

to show sub-pages of a parent page or while on a sub-page.

Hi,

I tried your code but it still display “child” in child page.

My structure is like this: catalog1 -> parent -> child
when I’m in child page, I would like to display list of parents(only, without any child) that are under catalog.

basically, when I’m in child page, I would like to go back two stage up and read parents that are under “catalog1”.

your help is appreciated.

I am looking for something similar. I want to show child pages while on parent page and parent pages whil on child page. So far I have only managed to show child pages on parent pages and the extra code I added to show parents on child pages just shows all pages and child pages:

<?php
		$children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0');
		$parents = wp_list_pages('title_li=&depth=1'.$post->post_parent.'&echo=0');
		  if ($children) { ?>
		  <ul class="subpage-list">
		  <?php echo $children; ?>
		  </ul>
		  <?php } 

		elseif ($parents) { ?>
			<ul class="parentpage-list">
			  <?php echo $parents; ?>
			  </ul>
		<?php }
		?>

Well, found a solution to show the sub page’s parent page on the sub page and echo the child page list on the parent page:

<?php
		$children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0');
		$parent = get_the_title($post->post_parent);
		  if ($children) { ?>
		  <ul class="subpage-list">
		  <?php echo $children; ?>
		  </ul>
		  <?php } 

		elseif ($parent) { ?>
			<ul class="parentpage-list">
			  <a href="<?php echo get_permalink($post->post_parent) ?>"><?php echo $parent;?></a>

			  </ul>
		<?php }
		?>

Will need to tweak the code some more, but this is what I was looking for more or less.

Had to make some adjustments to show parent page links only on subpages:

<?php
		$children = wp_list_pages('title_li=&child_of='.$post->ID.'&echo=0');
		  if ($children) { ?>
		  <ul class="subpage-list">
		  <?php echo $children; ?>
		  </ul>
		  <?php } ?>

		<?php
		$parent = get_the_title($post->post_parent);
		if  (is_page() && $post->post_parent ) { ?>
			  Terug naar <a class="parentpage-list" href="<?php echo get_permalink($post->post_parent) ?>"><?php echo $parent;?></a>

		<?php } ?>