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run code in 300+ PHP versions simultaneously
<?php $html = <<<HTML <div class="image"> <img src="https://www.gravatar.com/avatar/" alt="test" width="50" height="50"> </div> HTML; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xpath = new DOMXPath($dom); // using a loop in case there are multiple occurrences foreach ($xpath->query("//div[contains(@class, 'image')]/img") as $node) { $node->setAttribute('data-mfp-src', $node->getAttribute('src')); } echo $dom->saveHTML();
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
<div class="image"> <img src="https://www.gravatar.com/avatar/" alt="test" width="50" height="50" data-mfp-src="https://www.gravatar.com/avatar/"> </div>

preferences:
231.5 ms | 404 KiB | 300 Q