Please note, add() works a litte different than for DateTime-Objects.
Since DateTimeImmutable is in fact immutable. A line like this will not work:
$di = new DateTimeImmutable("2018-12-12T10:00:00");
$di->add(new DateInterval('PT45M')); // $di unchanged !!!
compared to
$dt = new DateTime("2018-12-12T10:00:00");
$dt->add(new DateInterval('PT45M')); // added 45 minutes
so you need to write
$di = new DateTimeImmutable("2018-12-12T10:00:00");
$di = $di->add(new DateInterval('PT45M')); // $di now changed
DateTimeImmutable::add
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
DateTimeImmutable::add — Añade una cantidad de días, meses, años, horas, minutos y segundos
Descripción
Igual que DateTime::add() excepto que trabaja con DateTimeImmutable.
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User Contributed Notes 1 note
Gunnar Bernstein ¶
6 years ago
