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To: PHP internals <internals@lists.php.net>
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Subject: [RFC] Deprecate dynamic properties
From: nikita.ppv@gmail.com (Nikita Popov)

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Hi internals,

I'd like to propose the deprecation of "dynamic properties", that is
properties that have not been declared in the class (stdClass and
__get/__set excluded, of course):

https://wiki.php.net/rfc/deprecate_dynamic_properties

This has been discussed in various forms in the past, e.g. in
https://wiki.php.net/rfc/locked-classes as a class modifier and
https://wiki.php.net/rfc/namespace_scoped_declares /
https://github.com/nikic/php-rfcs/blob/language-evolution/rfcs/0000-language-evolution.md
as a declare directive.

This RFC takes the more direct route of deprecating this functionality
entirely. I expect that this will have relatively little impact on modern
code (e.g. in Symfony I could fix the vast majority of deprecation warnings
with a three-line diff), but may have a big impact on legacy code that
doesn't declare properties at all.

Regards,
Nikita

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