JDMonthName
(PHP 4, PHP 5)
JDMonthName — Returns a month name
Description
string jdmonthname
( int
$julianday
, int $mode
)
Returns a string containing a month name.
mode tells this function which calendar to
convert the Julian Day Count to, and what type of month names are
to be returned.
| Mode | Meaning | Values |
|---|---|---|
| 0 | Gregorian - abbreviated | Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| 1 | Gregorian | January, February, March, April, May, June, July, August, September, October, November, December |
| 2 | Julian - abbreviated | Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec |
| 3 | Julian | January, February, March, April, May, June, July, August, September, October, November, December |
| 4 | Jewish | Tishri, Heshvan, Kislev, Tevet, Shevat, AdarI, AdarII, Nisan, Iyyar, Sivan, Tammuz, Av, Elul |
| 5 | French Republican | Vendemiaire, Brumaire, Frimaire, Nivose, Pluviose, Ventose, Germinal, Floreal, Prairial, Messidor, Thermidor, Fructidor, Extra |
Parameters
-
jday -
The Julian Day to operate on
-
calendar -
The calendar to take the month name from
Return Values
The month name for the given Julian Day and calendar.
Коментарии
Regarding the jewish date system. It may be worth noting the following peculiarities, some obvious some not so.1. Jewish days start at sunset NOT midnight so when converting from a Gregorian date to a Jewish one it might be worth asking if the date/time occurred 'after sunset'.
2. Jewish leap years follow a 19 year cycle which can be calculated like this:
function isJLeapYear($JYear) {
if ( ((7 * $JYear + 1) % 19) < 7 )
return true;
else
return false;
}
3. During a leap year a new leap-month called "Adar I" is inserted BEFORE the normal month of Adar.
4. During leap years, Adar is renamed "Adar II".
5. Adar/Adar II has 29 days
6. Adar I has 30 days
7. Cheshvan & Kislev have between 29 & 30 Days
8. Leap years have between 383 and 385 days.
8. non-leap years have between 353 and 355 days.
9 . In a 354-day year, months have alternating 30 and 29 day lengths.
10. In a 353-day year, the month of Kislev is reduced to 29 days.
11. In a 355-day year, the month of Cheshvan is increased to 30 days.
12. Leap years years follow the same pattern, with the addition of the 30-day Adar I as well.