'pexpo_tags', 'hide_empty' => false, ]); $users = get_users([ 'meta_key' => 'company', 'meta_compare' => 'EXISTS', ]); $companies = []; foreach ($users as $user) { $company = get_user_meta($user->ID, 'company', true); if (!empty($company)) { $companies[$company] = $company; } } $authors = get_users([ 'meta_key' => 'company', 'meta_value' => array_keys($companies) ?? [], 'meta_compare' => 'IN', 'fields' => 'ID', ]); ?>