我需要找到并替换html代码中的一些html元素（我按照这个答案：Getting an element from PHP DOM and changing its value），这样做我用以下内容检索内容：
$transport = $observer->getTransport();
$html = $transport->getHtml();
$dom = new Zend_Dom_Query($html);
$document = $dom->getDocument();
这就是结果：
<div class="page-title category-title">
<h1>Title</h1>
</div>
<div class="category-products">
<div class="toolbar">
<div class="pager">
<p class="amount">Items 2 to 2 of 2 total</p>
<div class="limiter">
<label>Show</label>
<select onchange="setLocation(this.value)">
<option value="limit=1" selected="selected">1</option>
</select>per page</div>
<div class="pages"> <strong>Page:</strong>
<ol>
<li>
<a class="previous i-previous" href="p=1" title="Previous">
<img src="skin/frontend/default/default/images/pager_arrow_left.gif" alt="Previous" class="v-middle" />
</a>
</li>
<li><a href="p=1">1</a>
</li>
<li class="current">2</li>
</ol>
</div>
</div>
<div class="sorter">
<p class="view-mode">
<label>View as:</label> <strong title="Grid" class="grid">Grid</strong> <a href="mode=list" title="List" class="list">List</a> </p>
<div class="sort-by">
<label>Sort By</label>
<select onchange="setLocation(this.value)">
<option value="dir=asc&order=position" selected="selected">Position</option>
<option value="dir=asc&order=name">Name</option>
<option value="dir=asc&order=price">Price</option>
</select> <a href="dir=desc&order=position" title="Set Descending Direction"><img src="skin/frontend/default/default/images/i_asc_arrow.gif" alt="Set Descending Direction" class="v-middle" /></a>
</div>
</div>
</div>
<ul class="products-grid">
<li class="item first">
<a href="test/a-2.html" title="a" class="product-image">
<img src="media/catalog/product/cache/1/small_image/135x/9df78eab33525d08d6e5fb8d27136e95/images/catalog/product/placeholder/small_image.jpg" width="135" height="135" alt="a" />
</a>
<h2 class="product-name"><a href="test/a-2.html" title="a">a</a></h2>
<div class="price-box"> <span class="regular-price" id="product-price-2">
<span class="price">$1.00</span> </span>
</div>
<div class="actions">
<button type="button" title="Add to Cart" class="button btn-cart" onclick="setLocation('test/a-2.html')"><span><span>Add to Cart</span></span>
</button>
<ul class="add-to-links">
<li>
<a href="wishlist/index/add/product/2/form_key/Ptxz8SA6DEWOGLF7/" class="link-wishlist">Add to Wishlist</a>
</li>
<li>
<span class="separator">|</span> <a href="catalog/product_compare/add/product/2/uenc/aHR0cDovL2Zhcm1hY2lhY2Fsb2luaS5jb20vbWluaWNvbXBhcmVkZW1vL2luZGV4LnBocC90ZXN0Lmh0bWw_cD0y/form_key/Ptxz8SA6DEWOGLF7/" class="link-compare">Add to Compare</a>
</li>
</ul>
</div>
</li>
</ul>
<script type="text/javascript">
decorateGeneric($$('ul.products-grid'), ['odd', 'even', 'first', 'last'])
</script>
<div class="toolbar-bottom">
<div class="toolbar">
<div class="pager">
<p class="amount">Items 2 to 2 of 2 total</p>
<div class="limiter">
<label>Show</label>
<select onchange="setLocation(this.value)">
<option value="limit=1" selected="selected">1</option>
</select>per page</div>
<div class="pages"> <strong>Page:</strong>
<ol>
<li>
<a class="previous i-previous" href="p=1" title="Previous">
<img src="skin/frontend/default/default/images/pager_arrow_left.gif" alt="Previous" class="v-middle" />
</a>
</li>
<li><a href="p=1">1</a>
</li>
<li class="current">2</li>
</ol>
</div>
</div>
<div class="sorter">
<p class="view-mode">
<label>View as:</label> <strong title="Grid" class="grid">Grid</strong> <a href="mode=list" title="List" class="list">List</a> </p>
<div class="sort-by">
<label>Sort By</label>
<select onchange="setLocation(this.value)">
<option value="dir=asc&order=position" selected="selected">Position</option>
<option value="dir=asc&order=name">Name</option>
<option value="dir=asc&order=price">Price</option>
</select> <a href="dir=desc&order=position" title="Set Descending Direction"><img src="skin/frontend/default/default/images/i_asc_arrow.gif" alt="Set Descending Direction" class="v-middle" /></a>
</div>
</div>
</div>
</div>
</div>
要查找我使用的Zend_Dom_Query：
$transport = $observer->getTransport();
$html = $transport->getHtml();
$dom = new Zend_Dom_Query($html);
$document = $dom->getDocument();
if(!is_object($document)){
Mage::log(print_r($document, TRUE), null, 'mylogfile1.log');
$transport->setHtml($html);
exit();
}
$node = $document->createElement("p", "This product isn't available in your country.");
不幸的是它总是在obeject检查中退出，否则它会返回此错误：
Fatal error: Call to a member function createElement() on a non-object
修改 完整的代码，如果有人想看到我检索内容的位置（我已经添加了一些注释以便更清楚）：
//retrieve html from observer
$transport = $observer->getTransport();
$html = $transport->getHtml();
//Retrieve other info
$stored = json_decode(Mage::getStoreConfig('razorphyn/country/buttons'));
$theme=trim(Mage::getSingleton('core/design_package')->getTheme('frontend'));
$dom = new Zend_Dom_Query($html);
$document = $dom->getDocument();
//check if $document is an object
if(!is_object($document)){
Mage::log(print_r($document, TRUE), null, 'mylogfile1.log');
$transport->setHtml($html);
exit();
}
//Create node that will replace the finded ones
$node = $document->createElement("p", "This product isn't available in your country.");
$elArray=array();
$productsIds= array();
//Retrieve products id if button and store query results
if($stored[$theme]['isOnClick']){
$queryDom='button'.$stored[$theme]['class'].'[onclick*="/checkout/cart/add/"]';
$results = $dom->query($queryDom);
foreach ($results as $result) {
preg_match("/checkout\/cart\/add.+\/([0-9]+)\//",$result->getAttribute('onclick'),$currentProdId);
$elArray[$currentProdId[0]]=$result;
$productsIds[]=$currentProdId[0];
}
}
//Retrieve products id if form, runa nother query to find button and store query results
else{
$queryDom='form'.$stored[$theme]['formId'].'[action*="/checkout/cart/add/"]';
$results = $dom->query($queryDom);
foreach ($results as $result) {
preg_match("/checkout\/cart\/add.+\/([0-9]+)\//",$result->getAttribute('action'),$currentProdId);
if($currentProdId[0] && is_numeric($currentProdId[0])){
$productsIds[]=$currentProdId[0];
$formDOM = new Zend_Dom_Query($result);
$formButton = $dom->query('button'.$stored[$theme]['class']);
foreach($formButton as $child){
$elArray[$currentProdId[0]]=$child;
}
}
}
}
//Retrieve info from table
$collection = Mage::getModel('razorphyn_country/product')->getCollection()
->addFieldToFilter('active', 1)
->addAttributeToFilter('productId', array('in' => $productsIds));
$res = $collection->getFirstItem();
$country = Mage::getSingleton('core/session')->getCustomerCountry;
//Replace items
if(isset($res->allowed)){
foreach($collection as $res){
if(isset($res->allowed) && (($res->allowed==0 && strpos($res->country, $country) !== false) || ($res->allowed==1 && strpos($res->country, $country) === false))){
$document = $document->replaceChild($node,$elArray[$res->productId]);
}
}
}
//Return edited html
$html = $document->saveHTML();
$transport->setHtml($html);
答案 0 :(得分：0)
您是否意识到您没有选择元素，而是使用createElement（）创建元素？
我不确定你想放置段落的位置，但是在div.category-products中说。所以让我们试试这样的事情;
$transport = $observer->getTransport();
$html = $transport->getHtml();
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query('//div[@class="category-products"]');
foreach($nodes as $node) {
$newNode = $dom->createElement("p", "This product isn't available in your country.");
$node->insertBefore($newNode, $node->nextSibling());
}