[DeepClone] Drop SPL "\0" special key from deepclone_hydrate()#584
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nicolas-grekas merged 1 commit into1.xsymfony/polyfill:1.xfrom Apr 26, 2026
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[DeepClone] Drop SPL "\0" special key from deepclone_hydrate()#584nicolas-grekas merged 1 commit into1.xsymfony/polyfill:1.xfrom
nicolas-grekas merged 1 commit into1.xsymfony/polyfill:1.xfrom
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Mirrors the C extension change (symfony/php-ext-deepclone#17). ArrayObject, ArrayIterator and SplObjectStorage all ship __serialize / __unserialize since PHP 7.4 — callers populate them the standard way: $ao = deepclone_hydrate('ArrayObject'); $ao->__unserialize([ArrayObject::ARRAY_AS_PROPS, ['x' => 1], []]); The mangled-key resolution path is unchanged; only the SPL fast-path is removed. Symfony's Hydrator/Instantiator retain BC by translating the legacy "\0" shape to __unserialize() themselves.
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…lize() in Hydrator/Instantiator (nicolas-grekas) This PR was merged into the 8.1 branch. Discussion ---------- [VarExporter] Translate legacy SPL "\0" key to __unserialize() in Hydrator/Instantiator | Q | A | ------------- | --- | Branch? | 8.1 | Bug fix? | no | New feature? | no | Deprecations? | no | Issues | - | License | MIT `deepclone_hydrate()` no longer treats the special `"\0"` key as SPL internal state (see symfony/php-ext-deepclone#17 / symfony/polyfill#584). `ArrayObject`, `ArrayIterator` and `SplObjectStorage` all ship `__serialize` / `__unserialize` since PHP 7.4 — the C extension and polyfill now expect callers to use the standard path. This PR keeps BC for `Hydrator::hydrate()` and `Instantiator::instantiate()`: when `$mangledVars` contains a `"\0"` key with the legacy shape, it is intercepted and translated to a `__unserialize()` call. Mapping: * `SplObjectStorage`: `"\0" => [$obj1, $info1, $obj2, $info2, ...]` → `__unserialize([[$obj1, $info1, ...], []])` * `ArrayObject`: `"\0" => [$array, $flags?, $iteratorClass?]` → `__unserialize([$flags ?? 0, $array, [], $iteratorClass ?? ArrayIterator::class])` * `ArrayIterator`: `"\0" => [$array, $flags?]` → `__unserialize([$flags ?? 0, $array, []])` In `Instantiator::instantiate()`, the `__unserialize()` call happens after instantiation so the constructor is still skipped. Depends on symfony/polyfill#584 (which depends on symfony/php-ext-deepclone#17). Commits ------- 54d013b [VarExporter] Translate legacy SPL "\0" key to __unserialize() in Hydrator/Instantiator
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Mirrors symfony/php-ext-deepclone#17.
ArrayObject, ArrayIterator and SplObjectStorage all ship
__serialize/__unserializesince PHP 7.4. The"\0"special key indeepclone_hydrate()was a port from Symfony's legacy Hydrator API and added bespoke handling that duplicated what these classes natively expose.Callers now populate these objects the standard way:
Or just round-trip via
deepclone_from_array(), which routes through__unserializenatively.The mangled-key resolution path (
"propName","\0*\0prop","\0Class\0prop") is unchanged; only the SPL fast-path is removed. Tests updated to use__unserialize().Symfony's
Hydrator::hydrate()/Instantiator::instantiate()keep BC by translating the legacy"\0"shape to__unserialize()themselves.