【封装的HTMLPage基类：HTMLPage.php】
<?php
class HTMLPage extends DOMDocument {
private $path;
function __construct($template) {
$this->loadHTMLFile($template);
$this->path = new DOMXPath($this);
}
function __get($property) {
if ($property == 'title') {
return $this->queryHead('/title', 0)->nodeValue;
}
}
function __set($property, $value) {
if ($property == 'title') {
$this->queryHead('/title', 0)->nodeValue = $value;
}
}
public function delete($node) {
if (is_string($node)) {
$node = $this->queryBody($node, 0);
} elseif ($node instanceof DOMNodeList) {
$node = $node->item(0);
}
return $node->parentNode->removeChild($node);
}
public function duplicate($templateNode) {
if ($templateNode instanceof DOMNodeList) {
$templateNode = $templateNode->item(0);
}
return $templateNode->parentNode->insertBefore($templateNode->cloneNode(true), $templateNode);
}
public function getInnerHTML(DOMNode $element) {
$innerHTML = '';
foreach ($element->childNodes as $child) {
$innerHTML .= $element->ownerDocument->saveHTML($child);
}
return $innerHTML;
}
public function query($path, $item = NULL) {
if (is_null($item)) {
return $this->path->query($path);
} else {
return $this->path->query($path)->item($item);
}
}
public function queryBody($path, $item = NULL) {
return $this->query("/html/body$path", $item);
}
public function queryHead($path, $item = NULL) {
return $this->query("/html/head$path", $item);
}
public function queryIn($path, $node, $item = NULL) {
if (is_string($node)) {
$node = $this->queryBody($node);
}
if (is_null($item)) {
return $this->path->query(".//$path", $node);
} else {
return $this->path->query(".//$path", $node)->item($item);
}
}
public function removeChildren($node) {
while ($node->childNodes->length > 0) {
$node->removeChild($node->firstChild);
}
}
public function setActiveTab($nodeList, $index) {
if (is_string($nodeList)) {
$nodeList = $this->queryBody($nodeList);
}
$nodeList->item(0)->removeAttribute('class');
$nodeList->item($index)->setAttribute('class', 'active');
}
public function setChildAttribute($node, $path, $attribute, $value) {
$node = $this->queryIn($path, $node, 0);
$node->setAttribute($attribute, $value);
return $node;
}
public function setChildText($node, $path, $text) {
$node = $this->queryIn($path, $node, 0);
$node->nodeValue = $text;
return $node;
}
public function setChildHTML($node, $path, $html) {
$node = $this->queryIn($path, $node, 0);
$this->setInnerHTML($node, $html);
return $node;
}
public function setInnerHTML($node, $html) {
if (is_string($node)) {
$node = $this->queryBody($node, 0);
}
$this->removeChildren($node);
if (empty($html)) {
return;
}
$doc = $node->ownerDocument;
$htmlclip = new DOMDocument();
$htmlclip->loadHTML('<meta http-equiv="Content-Type" content="text/html;charset=utf-8"><div>' . $html . '</div>');
$clipNode = $doc->importNode($htmlclip->documentElement->lastChild->firstChild, true);
while ($item = $clipNode->firstChild) {
$node->appendChild($item);
}
}
public function setText($node, $text) {
if (is_string($node)) {
$node = $this->queryBody($node, 0);
}
$node->nodeValue = $text;
}
public function show() {
echo $this->saveHTML();
}
}
，十分影响网页设计。 
