Opis Closure

Serializable closures

Opis Closure is a library that aims to overcome PHP's limitations regarding closure serialization by providing a wrapper that will make all closures serializable.

The library's key features:

Serialize any closure
Serialize arbitrary objects
Doesn't use eval for closure serialization or unserialization
Works with any PHP version that has support for closures
Supports PHP 7 syntax
Handles all variables referenced/imported in use() and automatically wraps all referenced/imported closures for proper serialization
Handles recursive closures
Handles magic constants like __FILE__, __DIR__, __LINE__, __NAMESPACE__, __CLASS__, __TRAIT__, __METHOD__ and __FUNCTION__.
Automatically resolves all class names, function names and constant names used inside the closure
Track closure's residing source by using the #trackme directive
Simple and very fast parser
Any error or exception, that might occur when executing an unserialized closure, can be caught and treated properly
You can serialize/unserialize any closure unlimited times, even those previously unserialized (this is possible because eval() is not used for unserialization)
Handles static closures
Supports cryptographically signed closures
Provides a reflector that can give you information about the serialized closure
Provides an analyzer for SuperClosure library
Automatically detects when the scope and/or the bound object of a closure needs to be serialized in order for the closure to work after deserialization

Documentation

The full documentation for this library can be found here.

License

Opis Closure is licensed under the MIT License (MIT).

Requirements

PHP ^5.4 || ^7.0

Installation

Opis Closure is available on Packagist and it can be installed from a command line interface by using Composer.

composer require opis/closure

Or you could directly reference it into your composer.json file as a dependency

{
    "require": {
        "opis/closure": "^3.1"
    }
}

Migrating from 2.x

If your project needs to support PHP 5.3 you can continue using the 2.x version of Opis Closure. Otherwise, assuming you are not using one of the removed/refactored classes or features(see CHANGELOG), migrating to version 3.x is simply a matter of updating your composer.json file.

Semantic versioning

Opis Closure follows semantic versioning specifications.

Arbitrary object serialization

This feature was primarily introduced in order to support serializing an object bound to a closure and available via $this. The implementation is far from being perfect and it's really hard to make it work flawless. I will try to improve this, but I can not guarantee anything. So my advice regarding the Opis\Closure\serialize|unserialize functions is to use them with caution.

SuperClosure support

Opis Closure is shipped with an analyzer(Opis\Closure\Analyzer) which aims to provide Opis Closure's parsing precision and speed to SuperClosure.

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