phpquery maintainable demo

demo.php

<?php  
namespace SvanDragt\Test;

require_once __DIR__ . '/vendor/autoload.php';

use phpQuery;

function do_parse() {
	// INITIALIZE IT
	// phpQuery::newDocumentHTML($markup);
	// phpQuery::newDocumentXML();
	// phpQuery::newDocumentFileXHTML('test.html');
	// phpQuery::newDocumentFilePHP('test.php');
	// phpQuery::newDocument('test.xml', 'application/rss+xml');
	// this one defaults to text/html in utf8
	$doc = phpQuery::newDocument('<div/>');

	// FILL IT
	// array syntax works like ->find() here
	$doc['div']->append('<ul></ul>');
	// array set changes inner html
	$doc['div ul'] = '<li>1</li> <li>2</li> <li>3</li>';
	// MANIPULATE IT
	$li = null;
	// almost everything can be a chain
	$doc['ul > li']
		->addClass('my-new-class')
		->filter(':last')
			->addClass('last-li')
	// save it anywhere in the chain
			->toReference($li);

	// ITERATE IT
	// all direct LIs from $ul
	foreach($doc['ul > li'] as $li) {
		// iteration returns PLAIN dom nodes, NOT phpQuery objects
		$tagName = $li->tagName;
		$childNodes = $li->childNodes;
		// so you NEED to wrap it within phpQuery
		phpQuery::newDocument($li)->addClass('my-second-new-class');
		// 
	}

	$doc['ul > li']->addClass('my-third-new-class');

	return $doc;
}

$doc = do_parse();


// PRINT OUTPUT
// 1st way
print "<h3>first</h3>";
print phpQuery::getDocument($doc->getDocumentID());
// 2th way
print "<h3>fourth</h3>";
print $doc->htmlOuter();
// 3th way
print "<h3>fifth</h3>";
print $doc;
// another...
print "<h3>sixth</h3>";
print $doc['ul'];

Basically avoid pq(), and any global state by returning phpQueryObjects from functions.