Re: [RFC] Clone with v2

Hi Am 2025-05-14 22:06, schrieb Matthew Weier O'Phinney:

The only question that arose for me is: what happens if a property name is provided to clone() that does not exist in the class definition; what will be the behavior at that time? Will an exception or error be thrown? If so, will it be a new one, or an existing one?

It's mentioned in the "Technical details" section:

Property assignments are made just as a regular assignment would be

It literally goes through the same code path. Thus a dynamic property will be created (and the associated warnings triggered). You can also see that in test Zend/tests/clone/clone_with_002.phpt of the implementation:

Deprecated: Creation of dynamic property C::$c is deprecated in %s on line %d

The internal implementation is roughly equivalent to:

    $cloned = clone $object;
    foreach ($withProperties as $key => $value) {
        $cloned->{$key} = $value;
    }
    return $cloned;

Just with the exception that writing readonly properties is allowed on the clone (unless already touched by __clone()). Best regards Tim Düsterhus