PHP

Iterate over Direct Child Nodes by Index

See more XML Examples

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>

Chilkat2 PHP

<?php

use Chilkat2\Xml;

$xml = new Xml();
$child = null;

// The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
try {
    $xml->LoadXmlFile('get_child.xml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\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
echo 'NumChildren = ', $xml->NumChildren, "\n";

// Iterate over the direct children by index. The first child
// is at index 0.
for ($i = 0; $i < $xml->NumChildren; $i++) {
    //  access the tag and content directly by index:
    echo $i, ': ', $xml->GetChildTagByIndex($i), ' : ', $xml->GetChildContentByIndex($i), "\n";
}

echo "-----\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->NumChildren; $i++) {
    $child = $xml->GetChild($i);
    echo $i, ': ', $child->Tag, ' : ', $child->Content, "\n";
}

echo "-----\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->NumChildren; $i++) {
    // Navigate to the Nth child.
    $xml->GetChild2($i);
    echo $i, ': ', $xml->Tag, ' : ', $xml->Content, "\n";
    // Navigate back up to the parent:
    $xml->GetParent2();
}

echo "-----\n";

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