public function evaluate($expr, DOMElement $node = null)
	{
		return $this->xpath->evaluate($expr, $node);
	}
public function evaluate($expr, DOMElement $node = null)
	{
		return $this->xpath->evaluate($expr, $node);
	}
public function evaluate ( $ expr , DOMElement $ node = null ) { return $ this -> xpath -> evaluate ( $ expr , $ node ) ; }
Evaluate an XPath expression

@param  string     $expr XPath expression
@param  DOMElement $node Context node
@return mixed
Evaluate an XPath expression