<?php $dom = new DOMDocument(); $dom->loadHtml(' Hello World have a look at <a href="www.laptops.com/apple">Apple Laptops</a>. For more ino go to <a href="www.apple.com">Apple.com</a> or to <a href="www.appleblog.com">Appleblog.com</a> ', LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xpath = new DOMXPath($dom); foreach ($xpath->query("//a") as $link) { $href = $link->getAttribute('href'); // link has a # in it, so replace with the links title if (strpos($href, 'www.laptops.com') === false) { $link->setAttribute("rel", "nofollow noopener"); } } echo $dom->saveHTML();
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