(PHP Extension) Iterate over Direct Child Nodes by Index

Demonstrates some ways to iterate over direct child nodes by index.

The input XML, available at http://www.chilkatsoft.com/data/get_child.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

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");

$xml = new CkXml();

// The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
$success = $xml->LoadXmlFile('get_child.xml');
if ($success != true) {
    print $xml->lastErrorText() . "\n";
    exit;
}

// The NumChildren property contains the number of direct
// child nodes.  Note: The child nodes under "xyz" are NOT
// direct children of "root".  Therefore, the "root" node has
// 7 direct children
print 'NumChildren = ' . $xml->get_NumChildren() . "\n";

// Iterate over the direct children by index. The first child
// is at index 0.

for ($i = 0; $i <= $xml->get_NumChildren() - 1; $i++) {
    //  access the tag and content directly by index:
    print $i . ': ' . $xml->getChildTagByIndex($i) . ' : ' . $xml->getChildContentByIndex($i) . "\n";

}

print '-----' . "\n";

// Do the same as the above loop, but get the child node
// and access the Tag and Content properties:
for ($i = 0; $i <= $xml->get_NumChildren() - 1; $i++) {
    // child is a CkXml
    $child = $xml->GetChild($i);
    print $i . ': ' . $child->tag() . ' : ' . $child->content() . "\n";

}

print '-----' . "\n";

// Do the same as the above loop, but instead of creating
// a new object instance for each child, call GetChild2 to
// update the object's reference instead.
for ($i = 0; $i <= $xml->get_NumChildren() - 1; $i++) {
    // Navigate to the Nth child.  
    $success = $xml->GetChild2($i);
    print $i . ': ' . $xml->tag() . ' : ' . $xml->content() . "\n";
    // Navigate back up to the parent:
    $success = $xml->GetParent2();
}

print '-----' . "\n";

// Notice that the Content of the "xyz" node is empty.  This is correct.
// The "xyz" node has no Content, but 2 direct children

?>