DOM/DOMXPathNavigator.php
public function MoveToParent()
	{
		if ( is_null( $this->domNode ) ) return false;

		$parent = $this->domNode->parentNode;
		if ( is_null( $parent ) ) return false;

		$this->domNode = $parent;
		return true;
	}
public function MoveToParent()
	{
		if ( is_null( $this->domNode ) ) return false;

		$parent = $this->domNode->parentNode;
		if ( is_null( $parent ) ) return false;

		$this->domNode = $parent;
		return true;
	}
public function MoveToParent ( ) { if ( is_null ( $ this -> domNode ) ) return false ; $ parent = $ this -> domNode -> parentNode ; if ( is_null ( $ parent ) ) return false ; $ this -> domNode = $ parent ; return true ; }
When overridden in a derived class, moves the XPathNavigator to the parent node of the current node.

@return bool	Returns true if the XPathNavigator is successful moving to the parent node of the current node; otherwise,
false. If false, the position of the XPathNavigator is unchanged.
When overridden in a derived class moves the XPathNavigator to the parent node of the current node .