如何编辑 XML DOMDocument 的特定节点值？

Question

我有以下 xml 文件：<products><info><productName>Chocolate Cake</productName> <productDescription>uieovbeveb</productDescription><quantity>1</quantity><stock>22</stock><price>2.99,12.99</price><size>200 ml</size><type>India,colombia</type></info><info><productName>watermelon</productName><productDescription>fr</productDescription><quantity>rf</quantity><stock>34</stock><price>4</price><size>4</size><type>5</type></info></products>我想访问其中一个产品的 ProductDescription 标签之一并更改其值，但它不起作用。这是我到目前为止所尝试的：if (isset($_POST['editProduct'])) {$xml = new DomDocument("1.0", "UTF-8");$xml->load('./data/productDB.xml');$productName = $_POST['productName'];$productDescription = $_POST['productDescription'];$quantity = $_POST['quantity'];$stock = $_POST['stock'];$price = $_POST['price'];$size = $_POST['size'];$type = $_POST['type'];$sizetoString = implode(",", $size);$typetoString = implode(",", $type);$pricetoString = implode(",", $price);$products = $xml->getElementsByTagName('info');foreach($products as $product) {    $nameOfProduct = $product->getElementsByTagName('productName')->item(0)->nodeValue;    if($nameOfProduct == $productName) {        $product->getElementsByTagName('productDescription')->item(0)->nodeValue="";        $product->getElementByTagName('productDescription')->item(0)->appendChild($product->createTextNode($productDescription));    }}$xml->save("./data/productDB.xml");

Answer 1

试试这个例子：

// load the document

$products = simplexml_load_file('test.xml');

// loop through each product and change description

foreach($products as $product) {

    $product->productDescription = 'new description';

}

// save the new xml

$products->asXML('test.xml');