function dayOfYear()
 {
     static $daysToMonth365 = array(0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365);
     static $daysToMonth366 = array(0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366);
     $num = func_num_args();
     if ($num == 3) {
         $args = func_get_args();
         $y = $args[0];
         $m = $args[1];
         $d = $args[2];
     } else {
         $y = $this->year;
         $m = $this->month;
         $d = $this->day;
     }
     $days = PHPRPC_Date::isLeapYear($y) ? $daysToMonth365 : $daysToMonth366;
     return $days[$m - 1] + $d;
 }