PHP code example of midnight / calendrics

1. Go to this page and download the library: Download midnight/calendrics library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

midnight / calendrics example snippets




alendrics\Duration;
use Calendrics\PlainDate;
use Calendrics\PlainTime;

$invoiceDate = PlainDate::parse('2026-03-20');
$dueDate = $invoiceDate->add(new Duration(days: 14));

// A calendar date needs a time and zone to identify an instant.
$deadline = $dueDate->toZonedDateTime('Europe/Vienna', new PlainTime(17));

echo $invoiceDate, PHP_EOL;           // 2026-03-20 (unchanged)
echo $dueDate, PHP_EOL;               // 2026-04-03
echo $deadline, PHP_EOL;              // 2026-04-03T17:00:00+02:00[Europe/Vienna]
echo $deadline->toInstant(), PHP_EOL; // 2026-04-03T15:00:00Z


use Calendrics\Duration;
use Calendrics\ZonedDateTime;

$start = ZonedDateTime::parse('2026-03-28T12:00:00+01:00[Europe/Vienna]');

echo $start->add(new Duration(days: 1));  // 2026-03-29T12:00:00+02:00[Europe/Vienna]
echo $start->add(new Duration(hours: 24)); // 2026-03-29T13:00:00+02:00[Europe/Vienna]