protected function evaluate($expr)
	{
		$useErrors = libxml_use_internal_errors(true);
		$result    = $this->xpath->evaluate($expr);
		libxml_use_internal_errors($useErrors);

		return $result;
	}
protected function evaluate($expr)
	{
		$useErrors = libxml_use_internal_errors(true);
		$result    = $this->xpath->evaluate($expr);
		libxml_use_internal_errors($useErrors);

		return $result;
	}
protected function evaluate ( $ expr ) { $ useErrors = libxml_use_internal_errors ( true ) ; $ result = $ this -> xpath -> evaluate ( $ expr ) ; libxml_use_internal_errors ( $ useErrors ) ; return $ result ; }
Evaluate given expression without raising any warnings

@param  string $expr
@return mixed
Evaluate given expression without raising any warnings