Comments on: is_subpage() – Custom Conditional Function

By: Giammarco Schisani

Giammarco Schisani — Sun, 10 Jan 2010 18:55:51 +0000

Exactly what I was looking for. Thanks for sharing.

By: is_subpage() WordPress Custom Function | DeveloperFox

is_subpage() WordPress Custom Function | DeveloperFox — Thu, 17 Dec 2009 19:59:24 +0000

[...] is_subpage() WordPress Custom Function – Custom conditional function for WordPress to check if the current page is a sub page. It works both inside and outside the main loop, only for 2.5 and upwards. [...]

By: Rob Williams

Rob Williams — Tue, 28 Jul 2009 16:08:31 +0000

I made a small modification to the function to allow you to check to see if it’s the child of a named page, rather than by its id.

function is_subpage( $page_name_or_id ) {
global $post, $wpdb;
if ( is_page() AND isset( $post->post_parent ) != 0 ) {
$aParent = $wpdb->get_row( $wpdb->prepare( “SELECT ID, POST_TITLE FROM $wpdb->posts WHERE ID = %d AND post_type = ‘page’ LIMIT 1″, $post->post_parent ) );

if ( $aParent->ID && ($aParent->ID == $page_name_or_id || $aParent->POST_TITLE == $page_name_or_id) ) return true; else return false;

} else {
return false;
}
}

Thanks for the function, Matt!

By: Sub Page / is_subpage() WordPress Function » Matt Varone | Squico

Sub Page / is_subpage() WordPress Function » Matt Varone | Squico — Mon, 01 Jun 2009 19:20:22 +0000

[...] Go to Source [...]

By: Rebecca

Rebecca — Thu, 07 May 2009 08:18:19 +0000

Hi,

Thanks for the code – I was wondering how I could check if I’m on a grandchild (sub-sub-page) of page 10 for example. I would be so grateful for any advice. Thanks!

By: Alex

Alex — Sat, 25 Apr 2009 15:26:34 +0000

Is there any reason not to use the post->ancestors property?

I did a similar approach and found out later that there is an array in the post objects containing all ancestors. I simply count it’s size:
If it’s bigger than 0 it’s a subpage, bigger than 1 a subsubpage, etc.