<?php
$html = <<<DATA
<body>
<img
style="style1"
title="No title"
src="img1.jpg"
>
<img title="My Title" src="img2.jpg">
</body>
DATA;
$dom = new DOMDocument('1.0', 'UTF-8');
$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$imgs = $dom->getElementsByTagName('img');
if ($imgs->length > 0) {
echo $imgs->item(0)->getAttribute('src');
}
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