Element Traversable

FluentDOM\Element Traversable

FluentDOM\Element implements the Traversable interface. More specific it implements IteratorAggregate. The returned Iterator is a RecursiveIterator. So it can be used it iterate the child nodes or all descendants.

Iterator Example

$xml = <<<'XML'
<feed xmlns="http://www.w3.org/2005/Atom">
  <title>Example Feed</title>
  <link href="http://example.org/"/>
  <updated>2003-12-13T18:30:02Z</updated>
  <author>
    <name>John Doe</name>
  </author>
  <id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id>
  <entry>
    <title>Atom-Powered Robots Run Amok</title>
    <link href="http://example.org/2003/12/13/atom03"/>
    <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id>
    <updated>2003-12-13T18:30:02Z</updated>
    <summary>Some text.</summary>
  </entry>
</feed>
XML;

$document = new FluentDOM\DOM\Document();
$document->preserveWhiteSpace = FALSE;
$document->loadXML($xml);

foreach ($document->documentElement as $node) {
  echo get_class($node), " ";
  if ($node instanceof DOMElement) {
    echo ' - ', $node->nodeName;
  } elseif ($node instanceof DOMText) {
    echo ': ', $node->nodeValue;
  }
  echo "\n";
}

Output

FluentDOM\Element  - title
FluentDOM\Element  - link
FluentDOM\Element  - updated
FluentDOM\Element  - author
FluentDOM\Element  - id
FluentDOM\Element  - entry

Iterator Example

$xml = <<<'XML'
<feed xmlns="http://www.w3.org/2005/Atom">
  <title>Example Feed</title>
  <link href="http://example.org/"/>
  <updated>2003-12-13T18:30:02Z</updated>
  <author>
    <name>John Doe</name>
  </author>
  <id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id>
  <entry>
    <title>Atom-Powered Robots Run Amok</title>
    <link href="http://example.org/2003/12/13/atom03"/>
    <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id>
    <updated>2003-12-13T18:30:02Z</updated>
    <summary>Some text.</summary>
  </entry>
</feed>
XML;

$document = new FluentDOM\DOM\Document();
$document->preserveWhiteSpace = FALSE;
$document->loadXML($xml);

$iterator = new RecursiveIteratorIterator(
  $document->documentElement, RecursiveIteratorIterator::SELF_FIRST
);

foreach ($iterator as $node) {
  echo get_class($node), " ";
  if ($node instanceof DOMElement) {
    echo ' - ', $node->nodeName;
  } elseif ($node instanceof DOMText) {
    echo ': ', $node->nodeValue;
  }
  echo "\n";
}

Output

FluentDOM\Element  - title
FluentDOM\Text : Example Feed
FluentDOM\Element  - link
FluentDOM\Element  - updated
FluentDOM\Text : 2003-12-13T18:30:02Z
FluentDOM\Element  - author
FluentDOM\Element  - name
FluentDOM\Text : John Doe
FluentDOM\Element  - id
FluentDOM\Text : urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6
FluentDOM\Element  - entry
FluentDOM\Element  - title
FluentDOM\Text : Atom-Powered Robots Run Amok
FluentDOM\Element  - link
FluentDOM\Element  - id
FluentDOM\Text : urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a
FluentDOM\Element  - updated
FluentDOM\Text : 2003-12-13T18:30:02Z
FluentDOM\Element  - summary
FluentDOM\Text : Some text.