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From the Codex, I'm using this function to return all children from a page ID without using SQL queries.

Usage:

<?php get_page_children( $page_id, $pages ) ?>

$page is defined as a "List of pages' objects".

What are examples of page objects I would use in this case?

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    What are you trying achieve in the end? I assume you just want to get the children of a specific page. If yes, then there are other simple methods for it. As far as I understand the codex entry, it could be page, post or custom_post_type. – Rutwick Gangurde Nov 25 '11 at 15:50
  • I thought page and post were all part of the same $post object where page would be defined as $post->post_type='page' – AlxVallejo Nov 25 '11 at 16:33
  • All of them are the same objects, if you do a global $post; print_r($post) on any page, you'll see it as a post object. But the type is what differentiates them. – Rutwick Gangurde Nov 25 '11 at 17:22
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They give you an example on that page by using WP_Query to query for all pages, then get_page_children just filters that list. the "without using SQL queries" part is a bit of a misnomer, since you have to have already queried the database at some point to get those pages. if you don't already have a result to filter, then something like get_children or get_pages might be simpler.

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