Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

CAL_EASTER_DEFAULT (int)
For easter_days: calculate Easter for years before 1753 according to the Julian calendar, and for later years according to the Gregorian calendar.
CAL_EASTER_ROMAN (int)
For easter_days: calculate Easter for years before 1583 according to the Julian calendar, and for later years according to the Gregorian calendar.
CAL_EASTER_ALWAYS_GREGORIAN (int)
For easter_days: calculate Easter according to the proleptic Gregorian calendar.
CAL_EASTER_ALWAYS_JULIAN (int)
For easter_days: calculate Easter according to the Julian calendar.
CAL_GREGORIAN (int)
For cal_days_in_month, cal_from_jd, cal_info and cal_to_jd: use the proleptic Gregorian calendar.
CAL_JULIAN (int)
For cal_days_in_month, cal_from_jd, cal_info and cal_to_jd: use the Julian calendar.
CAL_JEWISH (int)
For cal_days_in_month, cal_from_jd, cal_info and cal_to_jd: use the Jewish calendar.
CAL_FRENCH (int)
For cal_days_in_month, cal_from_jd, cal_info and cal_to_jd: use the French Repuclican calendar.
CAL_NUM_CALS (int)
The number of available calendars.
CAL_JEWISH_ADD_ALAFIM_GERESH (int)
For jdtojewish: adds a geresh symbol (which resembles a single-quote mark) as thousands separator to the year number.
CAL_JEWISH_ADD_ALAFIM (int)
For jdtojewish: adds the word alafim as thousands separator to the year number.
CAL_JEWISH_ADD_GERESHAYIM (int)
For jdtojewish: add a gershayim symbol (which resembles a double-quote mark) before the final letter of the day and year numbers.
CAL_DOW_DAYNO (int)
For jddayofweek: the day of the week as int, where 0 means Sunday and 6 means Saturday.
CAL_DOW_SHORT (int)
For jddayofweek: the abbreviated English name of the day of the week.
CAL_DOW_LONG (int)
For jddayofweek: the English name of the day of the week.
CAL_MONTH_GREGORIAN_SHORT (int)
For jdmonthname: the abbreviated Gregorian month name.
CAL_MONTH_GREGORIAN_LONG (int)
For jdmonthname: the Gregorian month name.
CAL_MONTH_JULIAN_SHORT (int)
For jdmonthname: the abbreviated Julian month name.
CAL_MONTH_JULIAN_LONG (int)
For jdmonthname: the Julian month name.
CAL_MONTH_JEWISH (int)
For jdmonthname: the Jewish month name.
CAL_MONTH_FRENCH (int)
For jdmonthname: the French Republican month name.