Stdlib: get_object_vars()/get_mangled_object_vars() — uninitialized public properties omitted (ext/standard/var.c)

[PurHur]

Summary

get_object_vars() and get_mangled_object_vars() on an object with a declared but uninitialized public property must include that key mapped to NULL, matching Zend. VM returns an empty array (property dropped).

get_class_vars() already returns ['x' => NULL] correctly — only instance export helpers are wrong.

Repro

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
php test/repro/maintainer_gap_get_object_vars_uninitialized.php
php bin/vm.php test/repro/maintainer_gap_get_object_vars_uninitialized.php'

Call	Zend PHP 8.2	VM today
get_object_vars(new C) where public $x;	array('x' => NULL)	array() ❌
get_mangled_object_vars(new C)	array('x' => NULL)	array() ❌

php-src reference

• php/php-src ext/standard/var.c — add_property_info, default property table includes declared properties with unset values

Implementation (PHP-in-PHP)

• ext/standard/get_object_vars.php / VmVar.php (or shared property enumerator): walk declared default properties and include public keys even when slot is unset
• Mirror for get_mangled_object_vars() mangled-name export
• No new C runtime — reuse existing property metadata from compile/runtime object layout

Done when (php-src-strict)

• Repro outputs array('x' => NULL) for both functions on VM
• Private/protected still hidden from global scope (unchanged)
• Targeted compliance guard in test/compliance/cases/stdlib/

Verification

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

Related: #9419 (get_object_vars TypeError regression), #5203 (property hooks), #1492

[PurHur]

claim: PHP Compiler STD Lib — batch (issues #10785, #10846, #10837)

[PurHur]

Merged. get_object_vars()/get_mangled_object_vars() now export declared untyped unset properties as NULL matching Zend.