PHP DOMNodeList::item方法代碼示例

 /**
  * Remove all empty elements
  *
  * @param DOMNodeList $DOMNodeList The list of all elements we are checking
  * @return DOMNodeList The modified list of all remaining elements
  */
 protected function _filter_empty_elements(DOMNodeList $DOMNodeList)
 {
     $NodeListIndex = 0;
     // We might reduce $DOMNodeList->length during the loop
     for ($NodeListIndex = 0; $NodeListIndex < $DOMNodeList->length; ++$NodeListIndex) {
         $DOMNode = $DOMNodeList->item($NodeListIndex);
         if (!isset($DOMNode->nodeName) || !in_array($DOMNode->nodeName, $this->_checkTagNames, true)) {
             continue;
         }
         // Climb up to make sure we’re not in an Instant Article element (which should have proper handling elsewhere)
         $parentNode = $DOMNode;
         while (isset($parentNode->nodeName) && $parentNode->nodeName != 'body') {
             if ('figure' == $parentNode->nodeName && false !== strpos($parentNode->getAttribute('class'), 'op-')) {
                 // We found an element that’s likely to be an Instant Article element
                 continue 2;
             }
             $parentNode = $parentNode->parentNode;
         }
         // Check all childnodes first
         if (is_a($DOMNode, 'DOMElement') && isset($DOMNode->childNodes) && is_a($DOMNode->childNodes, 'DOMNodeList')) {
             $this->_filter_empty_elements($DOMNode->childNodes);
         }
         if (isset($DOMNode->nodeValue) && '' == trim($DOMNode->nodeValue)) {
             if (!isset($DOMNode->childNodes) || is_null($DOMNode->childNodes) || is_a($DOMNode->childNodes, 'DOMNodeList') && !$DOMNode->childNodes->length) {
                 // If the element is an empty node, remove it. But we must have a parentNode to remove a node
                 if (is_a($DOMNode->parentNode, 'DOMElement')) {
                     $DOMNode->parentNode->removeChild($DOMNode);
                 }
             }
         }
     }
     return $DOMNodeList;
 }

 /**
  * Get single dom node value from node list at 0-index, or null when empty result
  *
  * @param \DOMNodeList $item
  * @throws \Exception
  * @return string|null
  */
 protected function getDomNodeValue(\DOMNodeList $item)
 {
     if ($item->length == 0) {
         return null;
     }
     return $item->item(0) instanceof \DOMAttr ? trim($item->item(0)->value) : trim($item->item(0)->nodeValue);
 }

 /**
  * Returns the current value of the iterator
  *
  * @return DOMNode|NULL Returns NULL if there is no current value
  */
 public function current()
 {
     if ($this->offset === NULL) {
         return NULL;
     } else {
         return $this->nodelist->item($this->offset);
     }
 }

 /**
  * Implement SeekableIterator::current()
  *
  * @return Zend_Service_Amazon_Item
  */
 public function current()
 {
     $dom = $this->_results->item($this->_currentIndex);
     if ($dom === null) {
         throw new Exception\RuntimeException('no results found');
     }
     return new Item($dom);
 }

 public function next()
 {
     if ($this->index < $this->count() - 1) {
         $this->current = $this->domNodeList->item(++$this->index);
     } else {
         $this->current = null;
     }
     return $this->current;
 }

 /**
  * Check if tagName from $nodes are correct depending on $name
  *
  * @param DOMNodeList $nodes to check
  * @param string      $name  to compare with tagName
  *
  * @return array of nodes with correct $name
  */
 public static function filterNodeListByName($nodes, $name)
 {
     $res = array();
     for ($i = 0; $i < $nodes->length; $i++) {
         if ($nodes->item($i)->tagName === $name) {
             $res[] = $nodes->item($i);
         }
     }
     return $res;
 }

 /**
  * @param UCS $ucs
  * @param \DOMNodeList $cols
  * @param \DomXPath $xpath
  */
 function __construct($ucs, $cols, $xpath)
 {
     $this->ucs = $ucs;
     $this->contract_id = $ucs->getContractId();
     $date_str = $cols->item(0)->nodeValue;
     list($date_str) = explode("*", $date_str, 2);
     $this->date = new \DateTime($date_str);
     $this->currency = $cols->item(1)->nodeValue;
     $this->total_amount = floatval(str_replace(" ", "", $cols->item(2)->nodeValue));
     $this->total_commission = floatval(str_replace(" ", "", $cols->item(3)->nodeValue));
     $link = $cols->item(6);
     while (!$link->getAttribute("href")) {
         $link = $link->firstChild;
     }
     $this->terminals_url = UCS::URL_REPORTS . $link->getAttribute("href");
 }

 /**
  * @param DOMNodeList $nodeList
  */
 protected function iterate(DOMNodeList $nodeList)
 {
     for ($i = 0; $i < $nodeList->length; $i++) {
         $node = $nodeList->item($i);
         $this->childrenVisitor->visit($node);
     }
 }

 /**
  * Implements SeekableIterator::current().
  *
  * @return  void
  * @throws  Zend_Service_Exception
  * @abstract
  */
 public function current()
 {
     if ($this->_resultClass === null) {
         throw new Zend_Service_Exception('Result class not provided');
     }
     $class = $this->_resultClass;
     return new $class($this->_results->item($this->_currentIndex));
 }

 /**
  * @param int $offset
  * @return mixed Can return all value types.
  */
 public function offsetGet($offset)
 {
     $node = $this->nodeList->item($offset);
     if ($node instanceof \DOMNode) {
         return new DomXPath($this->domDocument, $this->namespaces, $node);
     }
     return null;
 }

 /**
  * Transforms DOMNodeList to array of posts
  *
  * @param  DOMNodeList $nodeList
  * @return void
  */
 private function _constructFromNodeList(DOMNodeList $nodeList)
 {
     for ($i = 0; $i < $nodeList->length; $i++) {
         $curentNode = $nodeList->item($i);
         if ($curentNode->nodeName == 'post') {
             $this->_addPost(new Zend_Service_Delicious_Post($this->_service, $curentNode));
         }
     }
 }

 /**
  *
  * @param DOMNodeList $node        	
  */
 private function parseRelease($node)
 {
     $extra = $node->item(3)->nodeValue;
     if (strlen($extra)) {
         list($size, $files) = explode("|", $extra);
         $size = trim($size);
         $files = trim($files);
     }
     $entry = new Release();
     $entry->release = $node->item(2)->nodeValue;
     $entry->type = $node->item(1)->nodeValue;
     $entry->date = new DateTime($node->item(0)->nodeValue, new DateTimeZone('UTC'));
     $entry->size = intval($size) * 1024 * 1024;
     // as bytes
     $entry->files = intval($files);
     $entry->nuke = $node->item(4)->nodeValue;
     return $entry;
 }

 /**
  * Transforms DOMNodeList to array of posts
  *
  * @param  DOMNodeList $nodeList
  * @return void
  */
 private function constructFromNodeList(\DOMNodeList $nodeList)
 {
     for ($i = 0; $i < $nodeList->length; $i++) {
         $curentNode = $nodeList->item($i);
         if ($curentNode->nodeName == 'post') {
             $this->addPost(new Post($this->service, $curentNode));
         }
     }
 }

 /**
  * 
  * @param DOMNodeList $nodeList
  * @return type
  */
 public static function getFirstElement($nodeList)
 {
     if ($nodeList instanceof \DOMNodeList) {
         if ($nodeList->length > 0x0) {
             return $nodeList->item(0x0);
         } else {
             return null;
         }
     }
 }

 /**
  * Fix a list of nodes corresponding to an array of objects.
  *
  * @param \DOMNodeList $nodeList the node list matching <var>$objects</var>
  * @param array $objects the objects array matching <var>$nodeList</var>
  * @param \DOMXPath $xpath the xpath object representing the DOM
  */
 private function FixXmlNodes(\DOMNodeList $nodeList, array $objects, \DOMXPath $xpath)
 {
     if ($nodeList->length == sizeof($objects)) {
         $i = 0;
         foreach ($objects as $object) {
             $this->FixXmlNode($nodeList->item($i), $object, $xpath);
             $i++;
         }
     }
 }