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@ 2018-08-31T10:56:40Z

<?php
$xml = '        <GetCategories>
           <GetProduct>
               <Data>
                  <Id>87772873</Id>
                  <Name>Foods and Beverages</Name>
                  <Top>
                  <CategoryId>028392323</CategoryId>
                  <CategoryName>Categories</CategoryName> 
                  </Top>
               </Data>
           </GetProduct>
       </GetCategories>
       ';
       $dom = new DOMDocument;
        $dom->loadXML($xml);  
        $dom->preserveWhiteSpace = FALSE;

        $Xpath = new DOMXpath($dom);

        foreach ($Xpath->evaluate('/GetCategories/GetProduct/Data/Top[1]') as $data) 
         {
            $type = $data->appendChild($dom->createElement('TypeId'));
            $type->appendChild($dom->createTextNode('HDU5K3KDI23F'));
         }
    
           $xmldata = $dom->saveXML();
           echo $xmldata;

Output for git.master, git.master_jit, rfc.property-hooks: <?xml version="1.0"?> <GetCategories> <GetProduct> <Data> <Id>87772873</Id> <Name>Foods and Beverages</Name> <Top> <CategoryId>028392323</CategoryId> <CategoryName>Categories</CategoryName> <TypeId>HDU5K3KDI23F</TypeId></Top> </Data> </GetProduct> </GetCategories>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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