<div div="first-slide"></div> <div div="container"></div> <?php htmlString = '<html>...</html>';//either generated, or loaded from a file $dom = new DOMDocument; $dom->loadHTML($htmlString);//or loadHTMLFile $divs = $dom->getElementsByTagName('div'); foreach($divs as $div) { if ($div->hasAttribute('class') && strstr($div->getAttribute('class'), 'first-slide')) { //$div ~= <div class='one-two-three'> $div->appendChild( echo '<div class="wrapper"></div>';);//check the docs to see what you can do } } ?>
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