使用string更新XML文件（SimpleXmlElement Object）

Question

I have the following XML file

<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="2.6" jmeter="2.11 r1554548">
<hashTree>
<TestPlan ...>
  <elementProp name="TestPlan.user_defined_variables" ...>
    <collectionProp name="Arguments.arguments">

      <elementProp name="nb.publisher_Path" elementType="Argument">
        <stringProp name="Argument.name">nb.publisher_Path</stringProp>
        <stringProp name="Argument.value">http://mmm.com</stringProp>
        <stringProp name="Argument.metadata">=</stringProp>
      </elementProp> .... 

And i want to update the URL inside: elementProp name="nb.publisher_Path"

from:http://mmm.com to : http://aaa.com

so i have wrote the following PHP code:

<?php
$xml = new SimpleXmlElement(file_get_contents("C://...Testing_User.jmx"));

    $result_publisher_Path_2 = $xml->xpath('//elementProp[@name="nb.publisher_Path"]/stringProp[@name="Argument.value"]')[0];

    $result_advertiser_Path = $xml->xpath('//elementProp[@name="nb.advertiser_Path"]/stringProp[2]');
    $result_adbrooker_Path = $xml->xpath('//elementProp[@name="nb.adbrooker_Path"]/stringProp[2]');
    echo ($result_publisher_Path_2);
    (string)$xml->xpath('//elementProp[@name="nb.publisher_Path"]/stringProp[@name="Argument.value"]')[0] = "http://aaa.com";
    echo $xml->asXml();

so the result for

echo ($result_publisher_Path_2);

is the right URL which i want to replace, and when i tried to change it with

(string)$xml->xpath('//elementProp[@name="nb.publisher_Path"]/stringProp[@name="Argument.value"]')[0] = "http://aaa.com";  

it hasn't been changed.

Any Ideas?

Answer 1

Try Using this:

$result_publisher_Path_2[0] = "http://aaa.com";