Stdlib: ReflectionClass::getLazyInitializers() — PHP 8.4 lazy init closure list missing (zend_lazy_objects.c)

[PurHur]

Summary

PHP 8.4 adds ReflectionClass::getLazyInitializers(): array — returns the list of lazy-initialization closures registered on a class (lazy ghost / hook-backed lazy properties). This compiler implements other lazy-object reflection probes (#6054, #6606, #6885) but not this method.

php-src-strict: return shape and keying must match Zend reflection.

php-src reference

• php/php-src ext/reflection/php_reflection.c — ReflectionClass::getLazyInitializers
• php/php-src Zend/zend_lazy_objects.c — lazy initializer registry

Repro

./script/docker-exec.sh -- php bin/vm.php test/repro-maintainer/lazy_initializers_reflection.php

Current: bool(false) for method_exists(ReflectionClass::class, 'getLazyInitializers')

Expected (Zend PHP 8.4+): method exists; returns array (possibly empty) of Closure instances for lazy initializers on the class.

Implementation (PHP-in-PHP)

1. Add VM method on builtin ReflectionClass in lib/VM/Builtin/ (mirror ReflectionClassGetLazyPropertyNames pattern from Stdlib: ReflectionClass::getLazyPropertyNames() — PHP 8.4 lazy property introspection missing (ext/reflection/php_reflection.c) #6606).
2. Read lazy initializer closures from class metadata populated by compiler lazy-object lowering (lib/Compiler/ lazy ghost paths).
3. Wire JIT/AOT if reflection methods are lowered for self-host.
4. Compliance .phpt under test/compliance/cases/stdlib/reflection_class_get_lazy_initializers.phpt.

Done when

• Repro prints bool(true) and sensible array on VM
• Pairs with lazy object reflection issues Stdlib: ReflectionClass::getLazyPropertyNames() — PHP 8.4 lazy property introspection missing (ext/reflection/php_reflection.c) #6606 / Stdlib: ReflectionClass::createLazyGhost()/createLazyProxy() — static lazy factories missing (PHP 8.4, zend_lazy_objects.c) #6885
• No new C in runtime/

Links

#6054 · #6606 · #6885 · #1492

[PurHur]

Maintainer repro script (local path test/repro-maintainer/): see issue body command; paste into a .php file if the path is not yet on master.