Online PHP editor | refs for nYu31

<?php $XML = ' <html> <h1>Hello</h1> <ol> <li>test (no id)</li> <li xml:id="i2">test i2</li> </ol> </html> '; $doc = new DOMDocument; $doc->loadXML($XML); $xpath = new DOMXpath($doc); // get the ol $olNode = $xpath->evaluate('//ol[1]', NULL, FALSE)->item(0); // append a new list item $olNode->appendChild($liNode = $doc->createElement('li')); $liNode->appendChild($doc->createTextNode('test i3')); $liNode->setAttribute('xml:id', 'i3'); // show new DOM state print $doc->saveXML(); // insert a new list item before the others $olNode->insertBefore($liNode = $doc->createElement('li'), $olNode->firstChild); $liNode->appendChild($doc->createTextNode('test i0')); $liNode->setAttribute('xml:id', 'i0'); // show new DOM state print $doc->saveXML(); // fetch the li nodes without an xml:id $nodes = $xpath->evaluate('//ol/li[not(@xml:id)]', NULL, FALSE); // and remove them in reverse order for ($i = $nodes->length - 1; $i >= 0; --$i) { $nodes->item($i)->parentNode->removeChild($nodes->item($i)); } // show new DOM state print $doc->saveXML(); // replace the li[@xml:id'i2'] with a new node $liNode = $doc->getElementById('i2'); $followingNode = $liNode->nextSibling; $odNode = $liNode->parentNode; $olNode->removeChild($liNode); $olNode->insertBefore($liNode = $doc->createElement('li'), $followingNode); $liNode->appendChild($doc->createTextNode('test i2 replaced')); $liNode->setAttribute('xml:id', 'i2'); // show new DOM state print $doc->saveXML(); // NOT REFRESHING!?! var_dump($doc->getElementById('i2')); // object(DOMElement)#5 (0) { } li //CAN_NOT_doMORESomeChange($doc); $doc->loadXML($doc->saveXML()); // only way to refresh? print $doc->getElementById('i2')->tagName; //OK, is there // be ware that the xpath still uses the old document var_dump($xpath->document === $doc);