XML DOMDocument PHP - 获取属性值所在的节点 [英] XML DOMDocument PHP - Get node where attribute value

问题描述

目的:

创建一个方法来检索具有特定id"的嵌套元素.

Create a method to retrieve a nested element with a specific "id".

我尝试过的:

• 通过 DOMXpath 类查询方法检索带有 x 路径表达式的代码.每次返回一个空节点列表
• • '/row[@id=' .$id .']'
  • '//表/行[@id=' .$id .']'
  • '//[@id=' .$id .']'
  • '//[@id=' . $id . ']'

  示例 XML:

  <?xml version="1.0" encoding="UTF-8"?>
  <table>
    <row id="1">
      <job>construction</job>
      <age>34</age>
      <name>bob</name>
    </row>
    <row id="2">
      <job>construction</job>
      <age>34</age>
      <name>bob</name>
    </row>
    <row id="3">
      <job>construction</job>
      <age>34</age>
      <name>bob</name>
    </row>
    <row id="4">
      <job>construction</job>
      <age>34</age>
      <name>bob</name>
    </row>
  </table>
  

  PHP 代码:

  Class SimpleORM{
  
      ...
  
      public function find($id)
      {
          settype($id, "int");
          $xpath = new DOMXPath($this->_dom);
          $expression = '/row[@id=' . $id . ']';
          return $xpath->query($expression);
      }
  
  }
  

  完整的 PHP 代码可以在这里阅读 -> https://github.com/Danoon/SimpleORM/blob/master/SimpleORM.php

  The fUll Php code can be read here -> https://github.com/Danoon/SimpleORM/blob/master/SimpleORM.php

  问题:

  为什么没有返回正确的元素/节点，我该如何实现?

  Why is the proper element/node not returned and how can i achieve this?

  调用查找函数

  $users = new SimpleORM("users");
  $result = $users->find(1);
  

  推荐答案

  试试这个

      <?php
      $slideids = array();
      $get_id = 2; 
      $xml = new DOMDocument();
      $xml->load('test.xml'); // path of your XML file ,make sure path is correct
      $xpd = new DOMXPath($xml);
      false&&$result_data = new DOMElement(); //this is for my IDE to have intellysense
      $result = $xpd->query("//row[@id=".$get_id."]/*");  // change the table naem here
      foreach($result as $result_data){
          $key = $result_data->nodeName;
          $values = $result_data->nodeValue;
          $slideids[$key] = $values;
      }
  
      echo '<pre/>';
      print_r($slideids);
  ?>
  

  XPath 查询/表达式参考手册

  这篇关于XML DOMDocument PHP - 获取属性值所在的节点的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！