Edit report at https://bugs.php.net/bug.php?id=65419&edit=1
ID: 65419 Updated by: g...@php.net Reported by: nicolas dot grekas+php at gmail dot com Summary: Inside trait, self::class != __CLASS__ -Status: Open +Status: Verified Type: Bug Package: Scripting Engine problem PHP Version: 5.5.1 Block user comment: N Private report: N New Comment: Yes, that looks wrong. It should indeed behave as __CLASS__. Previous Comments: ------------------------------------------------------------------------ [2013-08-09 07:55:23] nicolas dot grekas+php at gmail dot com I totally agree with you. This reminds me the discussion that happened in https://bugs.php.net/55214 and that led to this special handling for __CLASS__. I think that the very same arguments apply here also. Concerning parent and static, they are free from this problem because they are resolved at run-time (tested, it works). ------------------------------------------------------------------------ [2013-08-08 18:33:55] requi...@php.net The RFC was created a few weeks after 5.4.0 was released and does not specify how self::class would work for traits. I would take that to mean the writer did not consider how it would work for traits, rather than that traits should "inherit" the behavior for classes. So either this is a doc bug and the ::class doc should state that it resolves to the trait itself when used for traits (as a "::trait" syntax would be weird), or self::class is fixed so be identical to __CLASS__. Presumably parent::class and static::class would receive similar changes. Note for the latter: in zend_language_scanner, __CLASS__ has special handling when used inside traits. I imagine similar logic - creating "a special __CLASS__ constant" - would be used in zend_do_resolve_class_name(). ------------------------------------------------------------------------ [2013-08-08 08:44:05] nicolas dot grekas+php at gmail dot com Description: ------------ The RFC for ::class name resolution as scalar say that self::class resolves the same as __CLASS__: https://wiki.php.net/rfc/class_name_scalars#considerations But this is not true when using traits. Test script: --------------- <?php trait abc { static function def() { echo self::class, "\n"; echo __CLASS__, "\n"; } class ghi { use abc; } ghi::def(); Expected result: ---------------- ghi ghi Actual result: -------------- abc ghi ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65419&edit=1
