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Absolute Parent of Any Child Page

/ Published in: PHP
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  1. function is_tree($pid) {	// $pid = The ID of the page we're looking for pages underneath
  2. 	global $post;			// load details about this page
  3.  
  4. 	if ( is_page($pid) )
  5. 		return true;		// we're at the page or at a sub page
  6.  
  7. 	$anc = get_post_ancestors( $post->ID );
  8. 	foreach ( $anc as $ancestor ) {
  9. 		if( is_page() && $ancestor == $pid ) {
  10. 			return true;
  11. 		}
  12. 	}
  13. 	return false;			// we aren't at the page, and the page is not an ancestor
  14. }

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