How can I ensure that my PHP-generated webpage is written in valid XHTML?

To ensure that your PHP-generated webpage is written in valid XHTML, you can use the PHP DOM extension to create and manipulate XML documents. This way, you can generate well-formed XHTML code with proper structure and syntax. By using the DOM extension, you can ensure that your output adheres to XHTML standards. 

<?php
// Create a new DOMDocument object
$doc = new DOMDocument('1.0', 'UTF-8');

// Create the root XHTML element
$html = $doc->createElement('html');
$html->setAttribute('xmlns', 'http://www.w3.org/1999/xhtml');
$doc->appendChild($html);

// Create other elements and append them to the HTML element

// Output the XHTML document
echo $doc->saveXML();
?>

Keywords

XHTML PHP validation W3C markup

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