PHP DOMDocument XML

Question

I have a php variable like this:

<div class="classA">
    <a id="someID1"></a>
    <div class="class1">
    <div class="class2">
        <div class="class3">
            <div class="class4">
                <h4>name, name<small>string</small></h4>
            </div>
            <div>
                <h4>number<small>string</small></h4>
            </div>
        </div>
    </div>
</div>
</div>
<div class="classA">
    <a id="someID2"></a>
    <div class="class1">
        <div class="class2">
            <div class="class3">
                <div class="class4">
                    <h4>nameA,nameA<small>stringA</small></h4>
                </div>
                <div>
                    <h4>numberA<small>stringB</small></h4>
                </div>
            </div>
        </div>
    </div>
</div>

Now I want to get the data from h4 which is in classA with so name,name/number/stringA/stringB or something like that. How do I get this done with DOMDocument?

I don't have a clue how to do that because the only difference between these two classes is the a-tag.

Answer 1

Use DOMXpath to selecting elements with special condition. In your case, base on child id attribute.

$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXpath($doc);
$nodes = $xpath->query("//div[@class='classA' and a[@id='someID2']]")->item(0)->getElementsByTagName("h4");

Check result in demo