templates - If Child or Grandchild of Page

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I'm serving a different header in Wordpress depending what section you are within the site, 'residential' , 'business' or other by using the following code. Although i need to extend it to work with grandchildren as well, so another level down.

<?php
/*
Template Name: Package
*/ 
if (is_page('business') || $post->post_parent=="17")
{
get_header('business');
}
else if (is_page('residential') || $post->post_parent=="19")
{
get_header('residential');
}
else 
{
get_header();
}
?>

I'm serving a different header in Wordpress depending what section you are within the site, 'residential' , 'business' or other by using the following code. Although i need to extend it to work with grandchildren as well, so another level down.

<?php
/*
Template Name: Package
*/ 
if (is_page('business') || $post->post_parent=="17")
{
get_header('business');
}
else if (is_page('residential') || $post->post_parent=="19")
{
get_header('residential');
}
else 
{
get_header();
}
?>

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Share Improve this question edited Jun 28, 2012 at 15:17 Stephen Harris 32.6k66 gold badges8484 silver badges118118 bronze badges asked Jun 28, 2012 at 14:54 Roy BarberRoy Barber 12111 silver badge44 bronze badges

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2 Answers 2

Sorted by: Reset to default 2

get_ancestors() will return the full parent page ID hierarchy for a given page ID which you could check against.

You can count post ancestor like this

$count = count(get_post_ancestors($post->ID));

The results means:

2= grandchild

1= child

0=parent

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