(PHP Extension) Insert XML into existing XML by calling InsertChildTreeAfter

Demonstrates how to insert an XML tree or subtree into another XML document using the InsertChildTreeAfter method.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// Build the 1st XML document:
// <x1>
//     <a1>1</a1>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

$xml = new CkXml();
$xml->put_Tag('x1');
$xml->UpdateChildContent('a1','1');
$xml->UpdateChildContent('a2','2');
$xml->UpdateChildContent('a3','3');

// Build a 2nd XML document:

// <x2>
//   <b1>11</b1>
//   <b2>22</b2>
//   <b3>33</b3>
// </x2>

$xml2 = new CkXml();
$xml2->put_Tag('x2');
$xml2->UpdateChildContent('b1','11');
$xml2->UpdateChildContent('b2','22');
$xml2->UpdateChildContent('b3','33');

// We want to insert xml2 into xml to get this:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Insert xml2 after "a1"

$index = $xml->TagIndex('a1');
if ($index < 0) {
    print 'a1 not found.' . "\n";
    exit;
}

$xml->InsertChildTreeAfter($index,$xml2);

print $xml->getXml() . "\n";

// The result is:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

// Note: xml2 now points to the subtree within xml.
// For example, update "b3" and then see how it's updated within the merged document:
$xml2->UpdateChildContent('b3','33333333');

print $xml->getXml() . "\n";

// The result:

// <x1>
//     <a1>1</a1>
//     <x2>
//         <b1>11</b1>
//         <b2>22</b2>
//         <b3>33333333</b3>
//     </x2>
//     <a2>2</a2>
//     <a3>3</a3>
// </x1>

?>