PHP 5 Calendar Functions

## PHP Basic

PHP HOME PHP Intro PHP Install PHP Syntax PHP Variables PHP Echo / Print PHP Data Types PHP String Functions PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP While Loops PHP For Loops PHP Functions PHP Arrays PHP Sorting Arrays PHP Superglobals

## PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

## PHP Advanced

PHP Arrays Multi PHP Date PHP Include PHP File PHP File Upload PHP Cookies PHP Sessions PHP E-mail PHP Secure E-mail PHP Error PHP Exception PHP Filter

## PHP Database

PHP MySQL Intro PHP MySQL Connect PHP CREATE DB/Table PHP INSERT INTO PHP SELECT PHP WHERE PHP ORDER BY PHP UPDATE PHP DELETE PHP ODBC

## PHP XML

XML Expat Parser XML DOM XML SimpleXML

## PHP and AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX RSS Reader AJAX Poll

## PHP Reference

PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Filesystem PHP Filter PHP FTP PHP HTTP PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP SimpleXML PHP String PHP XML PHP Zip PHP Timezones

## PHP Quiz

PHP Quiz PHP Certificate

# PHP 5 Calendar Functions

« Previous
Next Chapter »

## PHP Calendar Introduction

The calendar extension contains functions that simplifies converting between different calendar formats.

It is based on the Julian Day Count, which is a count of days starting from January 1st, 4713 B.C.

Note: To convert between calendar formats, you must first convert to Julian Day Count, then to the calendar of your choice.

Note: The Julian Day Count is not the same as the Julian Calendar!

## Installation

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

The Windows version of PHP has built-in support for this extension.

## PHP 5 Calendar Functions

Function | Description
--- | ---
cal_days_in_month() | Returns the number of days in a month for a specified year and calendar
cal_from_jd() | Converts a Julian Day Count into a date of a specified calendar
cal_info() | Returns information about a specified calendar
cal_to_jd() | Converts a date in a specified calendar to Julian Day Count
easter_date() | Returns the Unix timestamp for midnight on Easter of a specified year
easter_days() | Returns the number of days after March 21, that the Easter Day is in a specified year
frenchtojd() | Converts a French Republican date to a Julian Day Count
gregoriantojd() | Converts a Gregorian date to a Julian Day Count
jddayofweek() | Returns the day of the week
jdmonthname() | Returns a month name
jdtofrench() | Converts a Julian Day Count to a French Republican date
jdtogregorian() | Converts a Julian Day Count to a Gregorian date
jdtojewish() | Converts a Julian Day Count to a Jewish date
jdtojulian() | Converts a Julian Day Count to a Julian date
jdtounix() | Converts Julian Day Count to Unix timestamp
jewishtojd() | Converts a Jewish date to a Julian Day Count
juliantojd() | Converts a Julian date to a Julian Day Count
unixtojd() | Converts Unix timestamp to Julian Day Count

## PHP 5 Predefined Calendar Constants

Constant | Type | PHP Version
--- | --- | ---
CAL_GREGORIAN | Integer | PHP 4
CAL_JULIAN | Integer | PHP 4
CAL_JEWISH | Integer | PHP 4
CAL_FRENCH | Integer | PHP 4
CAL_NUM_CALS | Integer | PHP 4
CAL_DOW_DAYNO | Integer | PHP 4
CAL_DOW_SHORT | Integer | PHP 4
CAL_DOW_LONG | Integer | PHP 4
CAL_MONTH_GREGORIAN_SHORT | Integer | PHP 4
CAL_MONTH_GREGORIAN_LONG | Integer | PHP 4
CAL_MONTH_JULIAN_SHORT | Integer | PHP 4
CAL_MONTH_JULIAN_LONG | Integer | PHP 4
CAL_MONTH_JEWISH | Integer | PHP 4
CAL_MONTH_FRENCH | Integer | PHP 4
CAL_EASTER_DEFAULT | Integer | PHP 4.3
CAL_EASTER_ROMAN | Integer | PHP 4.3
CAL_EASTER_ALWAYS_GREGORIAN | Integer | PHP 4.3
CAL_EASTER_ALWAYS_JULIAN | Integer | PHP 4.3
CAL_JEWISH_ADD_ALAFIM_GERESH | Integer | PHP 5.0
CAL_JEWISH_ADD_ALAFIM | Integer | PHP 5.0
CAL_JEWISH_ADD_GERESHAYIM | Integer | PHP 5.0

« Previous
Next Chapter »

## Your suggestion:

Your E-mail (optional):

Page address:

Description:

Close [X]

## Thank You For Helping Us!

Your message has been sent to W3Schools.

Close [X]
Search w3schools.com:

## WEB HOSTING

Best Web Hosting UK Reseller Hosting Wow! $5 SSD Hosting

## WEB BUILDING

Download XML Editor
FREE Website BUILDER FREE Website Creator

## WEB RESOURCES

Web Statistics Web Validation

## SHARE THIS PAGE