remove element from xml

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醉话见心 2020-12-20 06:58
in my xml file i want to remove record element according to title My xml file is

      
      
        
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                   独厮守ぢ
                                             
                
                
                (楼主)
            
              
              
                2020-12-20 07:13
              

            
            
                        
From the question I understood you want to remove the  elements with a </code> child that contains a specific text. The solution is more verbose than it needs to be and <code>$attrValue</code> is suggesting the DOMText of the title element is an Attribute, which it isnt. But anyway, let's remove all this and use XPath:</p>

<pre><code>$searchString = 'Title:4';

$doc = new DOMDocument;
$doc->preserveWhiteSpace = FALSE;
$doc->load('playlist.xml');

$xPath = new DOMXPath($doc);
$query = sprintf('//record[./title[contains(., "%s")]]', $searchString);
foreach($xPath->query($query) as $node) {
    $node->parentNode->removeChild($node);
}
$doc->formatOutput = TRUE;
echo $doc->saveXML();
</code></pre>

<p>The XPath says, find all record nodes, which have a child title with a text node containing the search string. Note that containing, does not mean is equal to, so if you would use "Title:" as <code>$searchString</code>, it would remove all movies but "The_Princess_And_The_Frog_HD". If you want to remove exact titles, change the XPath to</p>

<pre><code>'//record[./title[text()="%s"]]'
</code></pre>

<p>Learn more about XPath at W3C but note that PHP supports XPath1.0 only.</p>
    </p>
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