php 创建树列表类别Wordpress

Posted 2021-05-05

My best solution! (works for any taxonomies,including "category")

$your_taxonomy='category';

function my_Categ_tree($TermName='', $termID, $separator='', $parent_shown=true ){
    $args = 'hierarchical=1&taxonomy='.$TermName.'&hide_empty=0&orderby=id&parent=';
            if ($parent_shown) {$term=get_term($termID , $TermName); $output=$separator.$term->name.'('.$term->term_id.')<br/>'; $parent_shown=false;}
    $separator .= '-';  
    $terms = get_terms($TermName, $args . $termID);
    if(count($terms)>0){
        foreach ($terms as $term) {
            //$selected = ($cat->term_id=="22") ? " selected": "";
            //$output .=  '<option value="'.$category->term_id.'" '.$selected .'>'.$separator.$category->cat_name.'</option>';
            $output .=  $separator.$term->name.'('.$term->term_id.')<br/>';
            $output .=  my_Categ_tree($TermName, $term->term_id, $separator, $parent_shown);
        }
    }
    return $output;
}
Then you can output:

1) target category(taxonomy) tree, using specific ID

echo my_Categ_tree($your_taxonomy, 0 );
2) All categories/taxonomies

foreach (get_terms($your_taxonomy, array('hide_empty'=>0, 'parent'=>0)) as $each) {
    echo my_Categ_tree($each->taxonomy,$each->term_id);
}