Online PHP editor | output for Lq7eE

<?php $doc = new DOMDocument; $doc->loadHTML('<html><body id="x"></body></html>'); $body = $doc->getElementById('x'); $doc2 = new DOMDocument; $div = $doc2->createElement('div'); $div->setAttribute('id', 'y'); $div = $doc->importNode( $div ); echo '1: ' . ( $doc->getElementById('y') ? $doc->getElementById('y')->tagName : 'null' ) . PHP_EOL; $body->appendChild( $div ); echo '2: ' . ( $doc->getElementById('y') ? $doc->getElementById('y')->tagName : 'null' ) . PHP_EOL; echo PHP_EOL . $doc->saveHTML();