cal_to_jd

Definition and usage

cal_to_jd() function converts the date of the specified calendar into a Julian day count.

Example

Convert September 25, 2016 (Gregorian Calendar) to Julian Day Count:

 <?php
$d = cal_to_jd ( CAL_GREGORIAN , 9 , 25 , 2016 ) ;
echo $d ;
?>

Run the instance

grammar

 cal_to_jd ( calendar , month , day , year ) ;