Checks if node contains other node

# DOMNode::contains

(PHP 8 >= 8.3.0)

DOMNode::contains — Checks if node contains other node

### Description

public function DOMNode::contains(DOMNode|DOMNameSpaceNode|null `$other`): bool

Checks if node contains `other` node.

### Parameters

`other`

  Node to be checked.

### Return Values

Returns `true` if node contains `other` node, `false` otherwise.

### Examples

Example #1 DOMNode::contains() example

    <?php

    $dom = new DOMDocument();
    $dom->loadXML(<<<XML
    <!DOCTYPE HTML>
    <html>
       <body>
           <main>
               <p>Hello, world!</p>
           </main>
       </body>
    </html>
    XML);

    $xpath = new DOMXPath($dom);
    $main = $xpath->query("//main")[0];

    var_dump($dom->documentElement->contains($main));
    ?>

The above example will output:

    bool(true)

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