JDMonthName

(PHP 4, PHP 5, PHP 7, PHP 8)

JDMonthName — 返回月份的名称

说明

jdmonthname ( int $julianday , int $mode ) : string

返回一个月份名称的字符串，mode参数指定使用哪种历法和月份名称的形式。

**Calendar modes**
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

参数

jday: 用来计算的julian天数
calendar: 历法的月份的名字

返回值

根据指定的julian天数和calendar历法参数而得到月份的名称。

User Contributed Notes

marc at linkitdesign dot com 15-Jun-2013 01:58


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.