Introduction
In this tutorial you will learn how to use PHP calendar functions. The PHP calendar functions is used to implement various types of calendar formats. Here I will explain about some Calendar functions and I am also describing some PHP calendar functions in PART 2.
PHP Calendar FrenchToJD function
It converts a date from French Republican Calendar to a Julian day count. This routine only converts dates in years 1 through 14.
For example
Gregorian date 22-9-1792 through 22-9-1806.
Syntax
| frenchtojd (month, day, year) |
Parameters in frenchtojd function
It has three parameters and every parameter is required in this function.
| Parameter |
Description |
| month |
It specifies month number. |
| day |
It specifies day number. |
| year |
It specifies year as a number from 1 to14.. |
Example of frenchtojd function:
|
<?php
$days=frenchtojd(1,20,12);
echo $days;
?> |
Output
![french-to-jd-calendar-function-in-php.jpg]()
PHP Calendar GregorianToJD function
It converts a date from Gregorian calendar to Julian calendar. The valid range for Gregorian calendar is 4714 B.C to 9999 A.D.
Syntax
| gregoriantojd (month, day, year) |
Parameters in GregorianToJD function
It has three parameters and every parameter is required in this function.
| Parameter |
Description |
| month |
It specifies month number. |
| day |
It specifies day number. |
| year |
It specifies year. |
Example of GregorianToJD function:
|
<?php
$julianday=gregoriantojd(6,12,2005);
echo $julianday;
?> |
Output
![gregorian-to-jd-calendar-function-in-php.jpg]()
PHP Calendar JDDayOfWeek function
It returns the day of a week. It can return a string or return an integer value depending on the mode.
Syntax:
Parameters in JDDayOfWeek function
It has two parameters.
| Parameter |
Description |
| month |
It specifies a number (a Julian day count). |
| day |
It specifies what to return (integer or string).
mode- 0(zero)- returns day of number as integer.
1(one)- returns day of number as string.
2(two)- returns day of number as string that contain the abbreviated day of week. |
Example of JDDayOfWeek function:
|
<?php
echodate("d")." ";
echodate("m")." ";
echodate("Y")." ";
echo' <br/>';
echojddayofweek ( cal_to_jd(CAL_GREGORIAN,date("m"),date("d"),date("Y")) , 1 );
?> |
Output
![jd-day-of-week-calendar-function-in-php.jpg]()