horde/tree

Tree rendering library

v3.0.0beta2 2026-04-07 00:00 UTC

Requires

• php: ^8.1
• horde/exception: ^3 || dev-FRAMEWORK_6_0
• horde/url: ^3 || dev-FRAMEWORK_6_0
• horde/util: ^3 || dev-FRAMEWORK_6_0
• psr/http-message: ^1.1 || ^2.0

Suggests

• ext-gettext: *

LGPL-2.1-only

• Jan Schneider
• Chuck Hagenbuch
• Michael Slusarz

• hierarchy

README

Tree data-structure and rendering library for PHP 8.1+.

Provides both a legacy PSR-0 API (Horde_Tree) and a modern PSR-4 API (Horde\Tree)

Install

composer require horde/tree

Quick Start

use Horde\Tree\Node;
use Horde\Tree\TreeBuilder;
use Horde\Tree\Renderer\ResponsiveRenderer;

$tree = (new TreeBuilder('nav'))
    ->addNode(new Node('inbox', 'Inbox', params: ['icon' => '/mail.svg', 'url' => '/mail']))
    ->addNode(new Node('unread', 'Unread (5)', parentId: 'inbox'))
    ->build();

echo (new ResponsiveRenderer())->render($tree);

Renderers

Renderer	Output
HtmlRenderer	Div-based HTML with row classes
SelectRenderer	<option> elements for <select>
SimplehtmlRenderer	Lightweight divs with [+]/[-] toggles
ResponsiveRenderer	Semantic HTML5 with <details>/<summary> and ARIA (unstable)

Links

• Migration guide — upgrading from v2 to v3
• Example CSS — reference stylesheet for ResponsiveRenderer
• Example PHP — runnable demo page
• Changelog

License

LGPL-2.1-only — see LICENSE.