3v4l.org

run code in 300+ PHP versions simultaneously
<?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();
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
<p>Some random text <iframe src="https://some-random-link.com" width="425" height="350" frameborder="0"></iframe></p>
preferences:
149.5 ms | 407 KiB | 5 Q