I'm working with get_pages on a site that has a very clean and hierarchical structure.
As part of a template, I wanted to show child pages as part of the template's 'boilerplate'. Reading the Codex documentation, there are two parameters that seem relevant:
I've been fiddling with them using a simple dump to the body of the page like this but I can't see how the two parameters fundamentally differ...except to offer the risk that they will clash.
For example, if i set
child_of to 17 (a valid page) and
parent to anything except 17 or -1...I get an empty array. Which makes sense...but...why two parameters? Backward compatibility I can't find when scanning around the docs and code?
Obligatory code used for testing:
$args = array( 'sort_order' => 'ASC', 'sort_column' => 'post_title', 'hierarchical' => 1, 'exclude' => '', 'include' => '', 'meta_key' => '', 'meta_value' => '', 'authors' => '', 'child_of' => 17, 'parent' => -1, 'exclude_tree' => '', 'number' => '', 'offset' => 0, 'post_type' => 'page', 'post_status' => 'publish' ); print_r (get_pages($args));
So: Any reason there seem to be two parameters that do the same thing?