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<?php $html = <<< STR <div class="container"> <h1>The Page Title</h1> <img src="MyImage.JPG" class="graphic" /> <p>Some body copy...</p> <img class="graphic" src="misc/SecondImage.JPG" /> </div> STR; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); // Get all images $images = $dom->getElementsByTagName('img'); foreach ($images as $img) { $newSrc = preg_replace_callback('~[^/]+$~', function($match) { // Change file names to lowercase return strtolower($match[0]); }, $img->getAttribute('src')); // Set new attribute value $img->setAttribute('src', $newSrc); } echo $dom->saveHTML();
Output for git.master, git.master_jit, rfc.property-hooks
<div class="container"> <h1>The Page Title</h1> <img src="myimage.jpg" class="graphic"> <p>Some body copy...</p> <img class="graphic" src="misc/secondimage.jpg"> </div>

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