PHP cal_to_jd() Function

In this chapter you will learn:

1. Definition for PHP cal_to_jd() Function
2. Syntax for PHP cal_to_jd() Function
3. Parameter for PHP cal_to_jd() Function
4. Return value from PHP cal_to_jd() Function
5. Example - Convert 20th of June, 2013 (Gregorian calendar) to Julian Day Count

Definition

The cal_to_jd() function converts a date in a specified calendar to Julian Day Count.

Syntax

PHP cal_to_jd() Function has the following syntax.

Parameter

calendar must be one of the following values:

• CAL_GREGORIAN
• CAL_JULIAN
• CAL_JEWISH
• CAL_FRENCH

Return

PHP cal_to_jd() Function returns a Julian Day number.

Example

Convert 20th of June, 2013 (Gregorian calendar) to Julian Day Count:

<?php
$d=cal_to_jd(CAL_GREGORIAN,6,20,2013);
echo $d;
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. Definition for PHP easter_date() Function
2. Syntax for PHP easter_date() Function
3. Parameter for PHP easter_date() Function
4. Return value from PHP easter_date() Function
5. Example - Print the easter date for different years

PHP 5 Predefined Calendar Constants

PHP cal_days_in_month() Function

PHP cal_from_jd() Function

PHP cal_info() Function

PHP cal_to_jd() Function

PHP easter_date() Function

PHP easter_days() Function

PHP frenchtojd() Function

PHP gregoriantojd() Function

PHP jddayofweek() Function

PHP jdmonthname() Function

PHP jdtofrench() Function

PHP jdtogregorian() Function

PHP jdtojewish() Function

PHP jdtojulian() Function

PHP jdtounix() Function

PHP jewishtojd() Function

PHP juliantojd() Function

PHP unixtojd() Function