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Informations about the package closure

Opis Closure

Tests Latest Stable Version Latest Unstable Version License

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:


The full documentation for this library can be found here.


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



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

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

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

We've added this feature in order to be able to support the serialization of a closure's bound object. The implementation is far from being perfect, and it's really hard to make it work flawless. We will try to improve this, but we can't guarantee anything. So our advice regarding the Opis\Closure\serialize|unserialize functions is to use them with caution.

Requires php Version ^5.4 || ^7.0 || ^8.0

The package opis/closure contains the following files

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