Php 如何从xml文件中删除特定元素

我想删除：

<newWord>
    <Heb>צהוב</Heb>
    <Eng>yellow</Eng>
 </newWord>

在这条线上

if($searchString == $child['Eng']) {

您试图比较子节点的主体，但它不会自动转换为字符串。它仍然是一个

simplexmlement对象

，因此比较失败

尝试显式地将其转换为字符串以获取标记体

if($searchString == (string)$child['Eng']) {

试试这个：

$searchString = 'yellow';
$xml = simplexml_load_file('./Dictionary_user.xml');

foreach($xml->children() as $child){    
  if($child->getName() == "newWord") {
    if($child->Eng == $searchString){
        $dom = dom_import_simplexml($child);
        $dom->parentNode->removeChild($dom);
    }
  }
}

echo $xml->asXML();

if($searchString == $child['Eng']) {

if($searchString == (string)$child['Eng']) {

$searchString = 'yellow';
$xml = simplexml_load_file('./Dictionary_user.xml');

foreach($xml->children() as $child){    
  if($child->getName() == "newWord") {
    if($child->Eng == $searchString){
        $dom = dom_import_simplexml($child);
        $dom->parentNode->removeChild($dom);
    }
  }
}

echo $xml->asXML();