public function modify($change)
    {
        $date = clone $this;
        $date->setDate(strtotime($change, $this->getDate(DATE_FORMAT_UNIXTIME)));

        return $date;
    }
public function modify($change)
    {
        $date = clone $this;
        $date->setDate(strtotime($change, $this->getDate(DATE_FORMAT_UNIXTIME)));

        return $date;
    }
public function modify ( $ change ) { $ date = clone $ this ; $ date -> setDate ( strtotime ( $ change , $ this -> getDate ( DATE_FORMAT_UNIXTIME ) ) ) ; return $ date ; }
Returns a modified date object.

@param string $change Modify string

@return AnDomainAttributeDate
Returns a modified date object .