1. Go to this page and download the library: Download bupy7/xml-constructor library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
$xml = new XmlConstructor([
// Indent each line in the XML document. 4 space by default.
'indentString' => ' ',
/* Header document tag. "<?xml version="1.0" encoding="UTF-8"