Online PHP editor | output for 9COaj

<?php //this code will append a &mobileapp to every https://example.com url and http://foobar.com url ob_start(); ?> <html> <head> </head> <body> <a href="http://foobar.com"> http://www.example.com/~hillybilly/foobar.php silly silly </body> </html> <?php $html = ob_get_clean(); $append = 'mobileapp'; $doc = new DOMDocument(); $doc->loadHTML($html); $xpath = new DOMXpath($doc); $elements = $xpath->query('//*[@href | @src | @action]'); if (!is_null($elements)) { foreach ($elements as $element) { switch ($element->nodeName) { case 'a': $element->setAttribute('href', $element->getAttribute('href') . '&' $append); } } } echo $doc->saveHtml();