PHP gregoriantojd() function usage and example

PHP Calendar Calendar Function Manual

gregoriantojd() function converts the Gregorian calendar date to Julian day count.

Syntax

gregoriantojd ($month, $day, $year);

Definition and Usage

The reasonable range of Gregorian calendar is4714 This function converts the Gregorian date to Julian day count. 9999 B.C. to
A.D.4714 Although this function can handle1582day (or Julian calendar)10day (or Julian calendar)15B.C. before the date, but it has no meaning. The Gregorian calendar until1582day (or Julian calendar)10year5month1752Year was invented, and some countries did not accept it for a long time. For example, the United Kingdom was in1918Year started using the Gregorian calendar, the Soviet Union was in1923Year, Greece was in

Year, most European countries use the Julian calendar.

Return value

Given the Julian day of a Gregorian date, an integer.

Online Example

<?php
　　　　　$jd = gregoriantojd(1,　12,　1990);
　　　echo "$jd";
　　　print "\n";
　　　
　　　$gregorian = jdtogregorian($jd);
　　　echo "$gregorian";
　　　print "\n";
?>

Output result:

2447904　
1/12/1990

　 PHP Calendar Calendar Function Manual