VI. Calendar Functions

介紹

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.

安裝

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

Windows 版本的 PHP 已內建此延伸的支援﹐所以你毋須再載入附加的延伸來使用這些功能。

執行時期組態

php.ini中沒有定義此延伸的組態指令。

資源類型

這個延伸沒有定義任何資源。

預先定義常數

以下的常數由此延伸定義,只在這個延伸被編譯成PHP或實行時期被動態載入時有效。

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)

CAL_MONTH_GREGORIAN_LONG (integer)

CAL_MONTH_JULIAN_SHORT (integer)

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)

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)

內容目錄
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