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Calendar Functions

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VIII. Calendar Functions

Введение

- The calendar extension presents a series of functions to simplify converting between different calendar formats. The intermediary or standard it is based on is the Julian Day Count. The Julian Day Count is a count of days starting from January 1st, 4713 B.C. To convert between calendar systems, you must first convert to Julian Day Count, then to the calendar system of your choice. Julian Day Count is very different from the Julian Calendar! For more information on Julian Day Count, visit http://www.hermetic.ch/cal_stud/jdn.htm. For more information on calendar systems visit http://www.boogle.com/info/cal-overview.html. Excerpts from this page are included in these instructions, and are in quotes.

Установка

- To get these functions to work, you have to compile PHP with --enable-calendar.

Версия PHP для

Windows имеет встроенную поддержку данного расширения. Это означает, что

для использования данных функций не требуется загрузка никаких

дополнительных расширений.

Настройка во время выполнения

Данное расширение не определяет никакие директивы конфигурации в php.ini.

Типы ресурсов

Данное расширение не определяет никакие типы ресурсов.

Предопределенные константы

-Перечисленные ниже константы определены данным расширением и могут быть

доступны только в том случае, если PHP был собран с

поддержкой этого расширения или же в том случае, если

данное расширение подгружается во время выполнения.

CAL_GREGORIAN (integer)

-

CAL_JULIAN (integer)

-

CAL_JEWISH (integer)

-

CAL_FRENCH (integer)

-

CAL_NUM_CALS (integer)

-

CAL_DOW_DAYNO (integer)

-

CAL_DOW_SHORT (integer)

-

CAL_DOW_LONG (integer)

-

CAL_MONTH_GREGORIAN_SHORT (integer)

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CAL_MONTH_GREGORIAN_LONG (integer)

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CAL_MONTH_JULIAN_SHORT (integer)

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CAL_MONTH_JULIAN_LONG (integer)

-

CAL_MONTH_JEWISH (integer)

-

CAL_MONTH_FRENCH (integer)

-

- The following constants are available since PHP 4.3.0 :

CAL_EASTER_DEFAULT (integer)

-

CAL_EASTER_ROMAN (integer)

-

CAL_EASTER_ALWAYS_GREGORIAN (integer)

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CAL_EASTER_ALWAYS_JULIAN (integer)

-

- The following constants are available since PHP 5.0.0 :

CAL_JEWISH_ADD_ALAFIM_GERESH (integer)

-

CAL_JEWISH_ADD_ALAFIM (integer)

-

CAL_JEWISH_ADD_GERESHAYIM (integer)

-

Содержание

cal_days_in_month -- Return the number of days in a month for a given year and calendar

cal_from_jd -- Converts from Julian Day Count to a supported calendar

cal_info -- Returns information about a particular calendar

cal_to_jd -- Converts from a supported calendar to Julian Day Count

easter_date -- Get Unix timestamp for midnight on Easter of a given year

easter_days -- Get number of days after March 21 on which Easter falls for a given year

FrenchToJD -- Converts a date from the French Republican Calendar to a Julian Day Count

GregorianToJD -- Converts a Gregorian date to Julian Day Count

JDDayOfWeek -- Returns the day of the week

JDMonthName -- Returns a month name

JDToFrench -- Converts a Julian Day Count to the French Republican Calendar

JDToGregorian -- Converts Julian Day Count to Gregorian date

jdtojewish -- Converts a Julian day count to a Jewish calendar date

JDToJulian -- Converts a Julian Day Count to a Julian Calendar Date

jdtounix -- Convert Julian Day to Unix timestamp

JewishToJD -- Converts a date in the Jewish Calendar to Julian Day Count

JulianToJD -- Converts a Julian Calendar date to Julian Day Count

unixtojd -- Convert Unix timestamp to Julian Day

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