Online PHP editor | refs for auMZ6

<?php $html = <<<HTML <p>Some random text <iframe src="http://some-random-link.com" width="425" height="350" frameborder="0"></iframe></p> HTML; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); foreach ($dom->getElementsByTagName('iframe') as $iframe) { $src = $iframe->getAttribute('src'); if (parse_url($src, PHP_URL_SCHEME) === 'http') { $iframe->setAttribute('src', substr_replace($src, 's', 4, 0)); } } echo $dom->saveHTML();