protected function max( $a, $b, $handleNull )
    {
        return $this->sort( $a, $b, $handleNull ) > 0 ? $a : $b;
    }
protected function max( $a, $b, $handleNull )
    {
        return $this->sort( $a, $b, $handleNull ) > 0 ? $a : $b;
    }
protected function max ( $ a , $ b , $ handleNull ) { return $ this -> sort ( $ a , $ b , $ handleNull ) > 0 ? $ a : $ b ; }
Return the max of two things
@param mixed $a
@param mixed $b
@param mixed $handleNull Is null treated as a high value or a low value. See, self::NULL_IS_HIGH
@return mixed
Return the max of two things