public function getRangeString()
    {
        $dateStart = $this->getDateStart();
        $dateEnd   = $this->getDateEnd();

        return $dateStart->toString("Y-m-d") . "," . $dateEnd->toString("Y-m-d");
    }
public function getRangeString()
    {
        $dateStart = $this->getDateStart();
        $dateEnd   = $this->getDateEnd();

        return $dateStart->toString("Y-m-d") . "," . $dateEnd->toString("Y-m-d");
    }
public function getRangeString ( ) { $ dateStart = $ this -> getDateStart ( ) ; $ dateEnd = $ this -> getDateEnd ( ) ; return $ dateStart -> toString ( "Y-m-d" ) . "," . $ dateEnd -> toString ( "Y-m-d" ) ; }
Returns the date range string comprising two dates

@return string eg, `'2012-01-01,2012-01-31'`.
Returns the date range string comprising two dates