PHP cal_to_jd()Functions

PHP Calendar 参考手册PHP Calendar Reference Manual

Examples

Convert June 20, 2007 (Gregorian calendar) to Julian Day Count:

<?php
$d=cal_to_jd(CAL_GREGORIAN,6,20,2007);
echo $d;
?>

Run example »

Definition and Usage

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

Syntax

cal_to_jd(calendar,month,day,year);

Parameter Description
calendar Required. Specifies the calendar to use. Must be one of the following constants:
  • CAL_GREGORIAN
  • CAL_JULIAN
  • CAL_JEWISH
  • CAL_FRENCH
month Required. A number specifying the month.
day Required. A number specifying the day.
year Required. A number specifying the year.

Technical Details

Return value: Returns the Julian Day number.
PHP Version: 4.1+

PHP Calendar 参考手册PHP Calendar Reference Manual Other Extensions