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Package serializor
Short Description PHP Serializor will serialize almost anything in PHP, including closures and anonymous classes.
License MIT
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Informations about the package serializor
Serializor
Serialize closures and anonymous classes
Serializor is a PHP library that allows you to serialize closures, anonymous classes, and arbitrary data - without wrapper classes or code modifications.
Key features:
- serialize closures without wrapper classes
- serialize anonymous classes
- works with readonly properties - no
__serialize()required - works with typed
Closureproperties (public readonly Closure $handler) - handles circular and recursive references
- supports WeakReference and WeakMap with correct weak semantics
- supports SPL classes (ArrayObject, SplObjectStorage, SplDoublyLinkedList, etc.)
- supports DateTime classes
- extensible via custom transformers
- optional HMAC signing for secure cross-machine serialization
- does not rely on PHP extensions (no FFI or similar dependencies)
- supports PHP 8.2 - 8.5
Example: Closure serialization
Example: Anonymous class serialization
Example: Readonly properties (no class modifications)
Installation
Serializor is available on Packagist and can be installed via Composer:
Requirements
- PHP >= 8.2
Security
By default, Serializor does not sign serialized data. For production use, especially in distributed systems or job queues, you should set a shared secret:
When a secret is set, all serialized data is HMAC-signed to prevent tampering.
Custom Serializers
For types that need special handling (like database connections that must be reconnected), you can register custom serialization logic:
See tests/Transformers/CustomTransformerTest.php for a complete example.
Comparison with Other Libraries
| Feature | Serializor | opis/closure 4.x | laravel/serializable-closure |
|---|---|---|---|
| Closure serialization | Yes | Yes | Yes |
| Anonymous class serialization | Yes | Yes | No |
| No wrapper classes required | Yes | Yes | No |
Readonly Closure properties |
Yes | Requires __serialize() |
No |
| WeakReference / WeakMap | Yes | Yes | No |
| SplObjectStorage | Yes | Yes | No |
| HMAC signing | Yes | Yes | Yes |
| Test coverage | 277 tests | ~70 tests | ~130 tests |
Serializor's advantages:
- Works with typed readonly properties and third-party objects without any class modifications
- Most comprehensive test suite covering edge cases from opis/closure GitHub issues
- Supports PHP 8.2-8.5 features including property hooks and pipe operator
Migrating from Laravel or Opis
Serializor can unserialize data that was serialized by laravel/serializable-closure or opis/closure, providing a seamless upgrade path. The original library must remain installed for deserialization to work:
This allows gradual migration: keep the old library installed while transitioning, then remove it once all stored data has been re-serialized with Serializor.
Known Limitations
- Anonymous classes extending internal PHP classes (stdClass, ArrayObject) cannot be serialized
- Multiple closures on the same line with identical signatures cannot be distinguished (PHP limitation)
History
Serializor was first released on September 5, 2024, introducing a novel architecture for PHP closure serialization: direct serialization without wrapper classes, stream wrapper-based reconstruction, WeakMap + ReflectionReference cycle detection, and an extensible transformer system.
Four months later, Opis/Closure v4.0.0 (December 2024) was released as a "complete rewrite" featuring remarkably similar architectural choices. For a detailed technical comparison, see DESIGN.md.
Performance
License
Serializor is licensed under the MIT License.
