Re: How to make a multi-peer PHP array based on WP cat heirachy?

[davesgonebananas]

You can use a custom walker to achieve this. It’s a fairly advanced topic but i’ll "walk" you through it :roll:

Start by creating a class for your walker either in functions.php in your theme, or wherever you like. You can use this as a template.

Code:

class CategoryNavigationWalker extends Walker {
var $db_fields = array(‘parent’ => ‘parent’, ‘id’ => ‘term_id’);

function start_lvl(&$output, $depth) {
$output .= “

n”;
}

function end_lvl(&$output, $depth) {
$output .= “

n”;
}

function start_el(&$output, $category, $depth, $args = null) {
$output .= “

{$category->name}”;
}

function end_el(&$output, $category, $depth, $args = null) {
$output .= “

“;
}
}

This example creates an unordered list, but you can change it to accommodate ordered lists, divs, drop down menus, whatever you fancy. I have just listed the categories but for a navigation you will obviously need to include hyperlinks.

Next a function that uses the walker to produce the navigation menu.

Code:

function category_navigation() {
$walker = new CategoryNavigationWalker();
echo $walker->walk(get_categories(), 0);
}

Finally, when you want to produce the navigation menu in your template use:

Code:

Hope that is easy to understand and solves your problem.

Dave