The cal_to_jd() is a PHP operate used to transform a given date right into a Julian Day Depend. With the assistance of the cal_to_jd() operate, we will decide what number of Julian days are on a given date within the chosen calendar. This operate is supported by PHP model 4.1 and later. The operate accepts 4 obligatory parameters and returns the Julian day quantity.
Syntax for cal_to_jd() Operate
The cal_to_jd() operate in PHP follows the straightforward syntax given under:
cal_to_jd(calendar, month, day, 12 months)
This syntax exhibits that the operate takes 4 inputs, that are:
-
- calendar: A compulsory argument that specifies a calendar worth resembling CAL_GREGORIAN, CAL_JEWISH, CAL_JULIAN, and CAL_FRENCH.
- month: A compulsory argument that specifies an integer worth for the month. Its vary is dependent upon the required calendar.
- day: A compulsory argument that specifies an integer worth for the day. Its vary is dependent upon the required calendar.
- 12 months: A compulsory argument that specifies an integer worth for the 12 months. Its vary is dependent upon the required calendar.
Return Worth: This operate supplies a Julian day quantity as an output.
Instance 1
This can be a easy PHP code that calls the GREGORIAN calendar to calculate a Julian quantity from its specified date utilizing the PHP cal_to_jd() operate.
< ?php
$date = cal_to_jd(CAL_GREGORIAN, 10, 03, 2010);
echo “The Julian day depend is: “, $date;
?>
Instance 2
This can be a easy PHP code that calls the JEWISH calendar to calculate a Julian quantity from its specified date utilizing PHP cal_to_jd() operate.
< ?php
$date = cal_to_jd(CAL_JEWISH, 10, 03, 2010);
echo “The Julian day depend is: “, $date;
?>
Instance 3
The next code calls the FRENCH calendar to calculate a Julian quantity from its specified date utilizing PHP cal_to_jd() operate.
< ?php
$date = cal_to_jd(CAL_FRENCH, 10, 03, 12);
echo “The Julian day depend is: “, $date;
?>
Conclusion
The built-in cal_to_jd() operate in PHP determines the Julian day depend utilizing the date from the required calendar. This operate helps 4 calendars which can be CAL_GREGORIAN, CAL_JEWISH, CAL_JULIAN, and CAL_FRENCH. The operate accepts 4 parameters and returns a calculated Julian day depend as an integer worth. This tutorial elaborated on the performance of the PHP cal_to_jd() operate with examples.
