PHP JulianToJD() function

Complete PHP Calendar Reference

Definition and Usage

The JulianToJD() function converts a Julian calendar date to a Julian day count.

Syntax

juliantojd(month,day,year)

Tips and Notes

Note: Although this function can handle dates back to 4713 B.C., you should notice that the Julian calendar was created in 46 B.C., and it did not stabilize until at least 8 A.D. Also, the beginning of a year varied from one culture to another - not all accepted January as the first month. Remember that the current calendar being used worldwide is the Gregorian calendar. The gregoriantojd() function can be used to convert such dates to their Julian Day count.

Example

<?php
$jd = juliantojd(10,3,1975);
echo($jd . "<br />");

$julian = jdtojulian($jd);
echo($julian);
?>

The output of the code above will be:

2442702
10/3/1975

Complete PHP Calendar Reference

Learn how your website performs under various load conditions

WAPT is a load, stress and performance testing tool for websites and web-based applications. In contrast to "800-pound gorilla" load testing tools, it is designed to minimize the learning curve and give you an ability to create a heavy load from a regular workstation. WAPT is able to generate up to 3000 simultaneously acting virtual users using standard hardware configuration. Virtual users in each profile are fully customizable. Basic and NTLM authentication methods are supported. Graphs and reports are shown in real-time at different levels of detail, thus helping to manage the testing process. Download the free 30-day trial!