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<?php $html = 'HTML String <h3>whatever</h3>'; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NODEFDTD); //Don't add a default doctype. $xpath = new DOMXPath($dom); foreach ($xpath->query('//h3') as $h3) { $h3->nodeValue = ucfirst($h3->nodeValue); } echo $dom->saveHTML();
Output for git.master, git.master_jit, rfc.property-hooks
<html><body><p>HTML String </p><h3>Whatever</h3></body></html>

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