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<?php | |
$dom = new DOMDocument; // create new DOMDocument instance | |
$dom->load('books.xml'); // load DOMDocument with XML data | |
$dit = new RecursiveIteratorIterator( | |
new RecursiveDOMIterator($dom), | |
RecursiveIteratorIterator::SELF_FIRST); | |
foreach($dit as $node) { | |
if($node->nodeType === XML_ELEMENT_NODE) { | |
echo $node->nodeName, PHP_EOL; | |
} | |
} | |
class RecursiveDOMIterator implements RecursiveIterator | |
{ | |
/** | |
* Current Position in DOMNodeList | |
* @var Integer | |
*/ | |
protected $_position; | |
/** | |
* The DOMNodeList with all children to iterate over | |
* @var DOMNodeList | |
*/ | |
protected $_nodeList; | |
/** | |
* @param DOMNode $domNode | |
* @return void | |
*/ | |
public function __construct(DOMNode $domNode) | |
{ | |
$this->_position = 0; | |
$this->_nodeList = $domNode->childNodes; | |
} | |
/** | |
* Returns the current DOMNode | |
* @return DOMNode | |
*/ | |
public function current() | |
{ | |
return $this->_nodeList->item($this->_position); | |
} | |
/** | |
* Returns an iterator for the current iterator entry | |
* @return RecursiveDOMIterator | |
*/ | |
public function getChildren() | |
{ | |
return new self($this->current()); | |
} | |
/** | |
* Returns if an iterator can be created for the current entry. | |
* @return Boolean | |
*/ | |
public function hasChildren() | |
{ | |
return $this->current()->hasChildNodes(); | |
} | |
/** | |
* Returns the current position | |
* @return Integer | |
*/ | |
public function key() | |
{ | |
return $this->_position; | |
} | |
/** | |
* Moves the current position to the next element. | |
* @return void | |
*/ | |
public function next() | |
{ | |
$this->_position++; | |
} | |
/** | |
* Rewind the Iterator to the first element | |
* @return void | |
*/ | |
public function rewind() | |
{ | |
$this->_position = 0; | |
} | |
/** | |
* Checks if current position is valid | |
* @return Boolean | |
*/ | |
public function valid() | |
{ | |
return $this->_position < $this->_nodeList->length; | |
} | |
} |
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