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Request #79228 Allow DateTimeInterface to be implemented in userland
Submitted: 2020-02-05 00:59 UTC Modified: 2022-06-05 14:33 UTC
From: eric at ericstern dot com Assigned:
Status: Wont fix Package: Date/time related
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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From: eric at ericstern dot com
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 [2020-02-05 00:59 UTC] eric at ericstern dot com 
Description:
------------
Since DateTimeInterface has a restriction that it cannot be implemented in user space, certain operations (especially in testing) become unnecessarily difficult. It would be great if a future version of PHP lifted this restriction.

Test script:
---------------
https://github.com/sebastianbergmann/phpunit/issues/3680 is an example of why this is a real-world issue.

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 [2020-02-05 01:21 UTC] requinix@php.net 
Happened during bug #65768 "because ext/date relies on classes implementing it to support certain internal structures".
https://git.php.net/?p=php-src.git;a=commit;h=5f09944662e09ea0b3f93cfab8702f188955e68c
 [2022-06-05 14:33 UTC] derick@php.net
-Status: Open +Status: Wont fix
 [2022-06-05 14:33 UTC] derick@php.net 
This can not be done, as the DateTime extension requires internal information to be present for classes that implement DateTimeInterface, and this internal (C-based) information can not be provided by user-land.
 
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