Quick Reference
The PHP gregoriantojd() function converts a date from the Gregorian Calendar to a Julian Day Count.
<?php
$jd = gregoriantojd(6, 20, 2007); // create Julian Day Count
echo $jd . '<br>';
echo jdtogregorian($jd); // convert back to a Gregorian date
?>Output
2454272
6/20/2007Syntax
gregoriantojd(month, day, year)Parameters
| Parameter | Description |
|---|---|
| month | Specifies the month as a number from 1 to 12 (required) |
| day | Specifies the day as a number from 1 to 31 (required) |
| year | Specifies the year as a number between -4714 and 9999 (required) |
PHP Notes:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
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