使用php删除Xml数据

Question

如何使用 php 删除 xml 上的特定元素

我的.xml

    <usr>
        <uid trk= "1234">
            <deleteThis>
                <mychild>here</mychild>
                <anotherchild>here</anotherchild>
            </deleteThis>
        </uid>
    </usr>

我想删除“deleteThis”元素及其子元素

结果：

     <usr>
        <uid trk= "1234">
        </uid>
    </usr>

这是我的非工作代码

index.php

$xml = new DOMDocument; 
    $xml->load('my.xml');
    $thedocument = $xml->documentElement;
    $list = $thedocument->getElementsByTagName('uid');

    foreach ($list as $domElement){
      $attrValue = $domElement->getAttribute('trk'); 
      if ($attrValue == "1234") { //if <uid trk= "1234">
        $valY = $domElement->getElementsByTagName('deleteThis');
        $thedocument->removeChild($valY);
      }
    }
$xml->save("my.xml");

好像没有找到节点。

Answer 1

  if ($attrValue == "1234") { //if <uid trk= "1234">
    $valY = $domElement->getElementsByTagName('deleteThis');
    //$valY is a DOMNodeList, that you happen to know there is only one doesnt matter
    foreach($valY as  $delnode){
      $delnode->parentNode->removeChild( $delnode);
    }
  }

Answer 2

使用 php 在 XML 中获取完整的 Curd 操作，请点击此链接 https://soronix.com/category/php/projects/xml-curd-php/

要从 XML 中删除数据，请尝试此代码

<?php
$id = $_GET['id'];
$employee = simplexml_load_file('employee.xml');

//we're are going to create iterator to assign to each user
$index = 0;
$i = 0;

foreach($employee->emp as $emp){
    if($emp->id == $id){
        $index = $i;
        break;
    }
    $i++;
}

unset($employee->emp[$index]);
file_put_contents('employee.xml', $employee->asXML());

$_SESSION['message'] = 'Employee deleted successfully';
header('location: '.$_SERVER['HTTP_REFERER']);

来源：https://soronix.com/delete-data-from-xml-using-php/