Online PHP editor | output for QhXOv

<?php $html = <<<HTML <a class="dessert" href="http://mywebsite.com/chocolate.php" title="Try out our new chocolate">chocolate</a> <a class="dessert" href="http://mywebsite.com/chocolate.php" title="Try out our new chocolate cookies">chocolate</a> <a class="dessert" href="http://mywebsite.com/chocolate.php" title="Try out our new chocolate vanilla cookies">chocolate</a> HTML; $doc = new DomDocument(); $fragment = $doc->createDocumentFragment(); $fragment->appendXML($html); $doc->appendChild($fragment); $nodes = $doc->getElementsByTagName('a'); foreach ($nodes as $node) { $node->setAttribute( "title", preg_replace("~\bchocolate(?:(?:\hvanilla)?\hcookies)?\b~", "chocolate chip cookies", $node->getAttribute("title") ) ); } echo $doc->saveHTML();