doushi9729 2017-11-25 16:27
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如何找到某个XML-Element并将其添加为新的？

Hi I looped through an XML Document and searching for specific Word (that works) and after that i would like to a a certain Element if the word is included in that part. 

<product>
    <title>TestProduct</title>
    <Specifications>
      <item name="Specifications1">Test</item>
      <item name="Specifications2">Hello World</item>
    </Specifications>
    <body>
      <item name="Color">Black</item>
    </body>
 </product>

I tried this:

<?php

$dom = new DOMDocument;
$dom->load('Test.xml');
# set up the xpath
$xpath = new DOMXPath($dom);
$append= $dom->getElementsByTagName('Text');
print_r($append);
foreach ($xpath->query("*[contains(., 'Test')]") as $item) {
    $element = $dom->createElement('ID', '123');
    $append->appendChild($element);
}    
?>

but it doesn't work can someone give me a hint? Tanks ;)

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1条回答 默认 最新

  • douchibu7040 2017-11-25 17:53
    关注

    The problem is that your trying to add the new element into the wrong place. This combines the getElementsByTagName and the XPath into one loop and then adds the new element to any element it finds.

    $dom = new DOMDocument;
$dom->load('Test.xml');
$xpath = new DOMXPath($dom);
foreach ($xpath->query("//*[contains(., 'Black')]") as $item) {
    $element = $dom->createElement('ID', '123');
    $item->appendChild($element);
}

echo $dom->saveXML();

    See how the XPath finds any element which contains 'Test'. Then it adds the new element to each element it finds. The main thing that I have changed is you were adding the ID to $append and not $item.

    If you wanted to just update the first instance of a particular piece of text...

    $matchList = $xpath->query("//*[contains(text(), 'Black')]");
$element = $dom->createElement('ID', '123');
$matchList->item(0)->appendChild($element);
echo $dom->saveXML().PHP_EOL;
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

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