function show_categories($atts, $content) {
extract( shortcode_atts( array('taxonomy' => 'ad_cat'), $atts ) );
$cats = get_categories(array('taxonomy' => $taxonomy,'hide_empty' => 0, 'hierarchical' => 0, 'parent' => 0));
return show_categories_level($cats, '', '', $taxonomy);
}
function show_categories_level($cats, $names, $ids,$taxonomy) {
$res = '<ol>';
foreach ($cats as $cat) {
if($names)$n = "$names, $cat->name"; else $n = $cat->name;
if($ids)$i = "$ids, $cat->term_id"; else $i = $cat->term_id;
$res = $res."<li>$n : $i</li>";
$kittens = get_categories(array('taxonomy' => $taxonomy,'hide_empty' => 0, 'hierarchical' => 0, 'parent' =>$cat->term_id));
if($kittens) {
$res .= ("<li>".show_categories_level($kittens, $n, $i, $taxonomy)."</li>");
}
}
return $res."</ol>";
}
add_shortcode('show-categories', 'show_categories');
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