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@ 2023-02-14T10:52:33Z

<?php

$dt = new DateTime('2015-01-01 00:00:00+00:00');
var_dump($dt->format('c'));
var_dump($dt->modify('+1 s')->format('c'));

$dt = new DateTimeImmutable('2015-01-01 00:00:00+00:00');
var_dump($dt->format('c'));
var_dump($dt->modify('+1 s')->format('c'));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

23.77 ms | 404 KiB | 5 Q