DOM/DOMXPathNavigator.php
public function MoveToPrevious()
	{
		if ( is_null( $this->domNode ) || $this->domNode instanceof \DOMAttr ) return false;

		$previous = $this->domNode->previousSibling;
		if ( is_null( $previous ) ) return false;

		$this->domNode = $previous;
		return true;

	}
public function MoveToPrevious()
	{
		if ( is_null( $this->domNode ) || $this->domNode instanceof \DOMAttr ) return false;

		$previous = $this->domNode->previousSibling;
		if ( is_null( $previous ) ) return false;

		$this->domNode = $previous;
		return true;

	}
public function MoveToPrevious ( ) { if ( is_null ( $ this -> domNode ) || $ this -> domNode instanceof \ DOMAttr ) return false ; $ previous = $ this -> domNode -> previousSibling ; if ( is_null ( $ previous ) ) return false ; $ this -> domNode = $ previous ; return true ; }
When overridden in a derived class, moves the XPathNavigator to the previous sibling node of the current node.

@return bool	Returns true if the XPathNavigator is successful moving to the previous sibling node; otherwise,
false if there is no previous sibling node or if the XPathNavigator is currently positioned on an
attribute node. If false, the position of the XPathNavigator is unchanged.
When overridden in a derived class moves the XPathNavigator to the previous sibling node of the current node .