Libraries tagged by immutable data

PHP type safe, immutable calendar library

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Immutable, timezone-aware date and time types with Duration, Period, and Interval

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Immutable, highly-performant collections, well-suited for functional programming and memory-intensive applications.

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Immutable objects for Event Engine

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A CakePHP plugin for generating immutable Data Transfer Objects with full type safety

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A modern, strictly typed, and extensible invoice generator for Laravel 12+ built with PHP 8.4 syntax. This package provides a clean builder pattern API, immutable data objects, and modular design inspired by LaravelDaily/laravel-invoices but rewritten from scratch with SOLID principles and Laravel best practices.

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Doctrine DateTimeImmutable types

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Transform raw input data into consistent, immutable PHP objects

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A lightweight library to map array data to PHP immutable objects

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Structured, type-safe, immutable data transfer.

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Bundle integration of Doctrine DateTimeImmutable types for Symfony

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Plain and simple immutable DTO pattern implementation based on php annotations

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Strict immutable DTOs, VOs, and SVOs for PHP 8.4+ with construction-time type validation, deep path mutation, and automatic validation chaining.

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TC39 Temporal API for PHP — immutable dates, times, durations, and time zones with nanosecond precision

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Simple, immutable data structures

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