Predefined Constants

- « Installation

- Calendar Functions »

- PHP Manual
- Calendar
- Predefined Constants

# 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.