public function isTaurus()
    {
        return ($this->month === self::MONTH_APRIL) && ($this->day >= 21) && ($this->day <= 30) || ($this->month === self::MONTH_MAY) && ($this->day <= 21);
    }
public function isTaurus()
    {
        return ($this->month === self::MONTH_APRIL) && ($this->day >= 21) && ($this->day <= 30) || ($this->month === self::MONTH_MAY) && ($this->day <= 21);
    }
public function isTaurus ( ) { return ( $ this -> month === self :: MONTH_APRIL ) && ( $ this -> day >= 21 ) && ( $ this -> day <= 30 ) || ( $ this -> month === self :: MONTH_MAY ) && ( $ this -> day <= 21 ) ; }
Checks whether the sign is Taurus

@return boolean
Checks whether the sign is Taurus