$html = '<html>
<head>
<meta charset="utf-8">
<title>test</title>
</head>
<body>
<p class="test_class test_class1">p1</p>
<p class="test_class test_class2">p2</p>
<p class="test_class test_class3">p3</p>
<p id="p_id" class="test_class test_id">p_id</p>
<p id="p_id_2" class="test_class test_id">p_id_2</p>
<p>p4</p>
<div id="test1">测试1</div>
</body>
</html>';
$dom = new ParserDom($html);
echo $html . "\n\n\n";
echo "p last one: " . $dom->findBreadthFirst('p', -1)->getPlainText() . "\n";
echo "have id first: " . $dom->findBreadthFirst('p[id]', 0)->getPlainText() . "\n";
echo "hava id p_id_2 first: " . $dom->findBreadthFirst('p[id=p_id_2]', 0)->getPlainText() . "\n";
echo "do not have id second: " . $dom->findBreadthFirst('p[!id]', 1)->getPlainText() . "\n";
echo "get by id test1: " . $dom->findBreadthFirst('#test1', 0)->getPlainText() . "\n";
$p1 = $dom->findBreadthFirst('p.test_class1', 0);
echo "get by class test_class1: " . $p1->getPlainText() . "\n";
echo "class: " . $p1->getAttr('class') . "\n";
$p_array = $dom->findBreadthFirst('p.test_class');
echo "\np list: \n";
foreach ($p_array as $p) {
echo $p->getPlainText() . "\n";
}
echo "\n";
