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$products = simplexml_load_file('test.xml');// loop through each product and change descriptionforeach($products as $product) {&nbsp; &nbsp; $product->productDescription = 'new description';}// save the new xml$products->asXML('test.xml');