Is there a method like DateTime->add() that doesn't change the DateTime itself?

Question

PHP

Actually the essence is in the catch - is there a method that adds a DateInterval, BUT not changing the object from which we called this method, but returning the changed value? Or are we still doomed to use clone, write it to a variable, and only then call add?

Answer 1

Yes, if you use the DateTimeImmutable class instead of DateTime. php.net/manual/en/class.datetimeimmutable.php

Answer 2

Thank you! I passed by it so many times, but always by)
I will add that the DateTimeImmutable::createFromMutable(new DateTime) method makes a "non-mutable" object out of a "mutable" object. Very convenient, but only works with version 5.6 :(