Libraries tagged by immutable data

Immutable tree data structures and operations for hierarchical data

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PHP 8.5+ DTO and Data library with immutable DTOs and mutable Data objects

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Models time as immutable value objects for PHP: instants, durations, periods, timezones, and time-of-day, all UTC-normalized.

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Immutable DTOs with bidirectional casting. No framework required. 8x faster than the alternative.

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Immutable, zero-runtime-dependency multi-calendar library for PHP 8.1+. Gregorian, Jalali (Shamsi), and Hijri, differentially tested against ICU.

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A simple functional programming library.

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PHP7.1 Fluent, immutable SQL query builder. Connectionless, framework-agnostic, no dependency.

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A set of auto-curried immutable data-last functions for PHP. Inspired by lodash/fp.

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Cell-grid value objects for terminal rendering — Buffer and Cell as immutable, fluent data model.

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A lightweight library to map array data to PHP immutable objects

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Infrastructure kernel for PHP — an immutable DomainKernel holding wired-up cache, logger, event dispatcher, HTTP client, database, mailer and filesystem, plus an optional ENV-driven bootstrap. Jardis-generated domain code reaches it through a single interface.

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Polyfill for the DateTimeImmutable class added in PHP 5.5.0

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Easy way to build up and sanitize your application objects.

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Immutable PHP currency converter that's data-agnostic.

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A framework-agnostic PHP DTO package that provides nested casting, recursive serialization, validation, assemblers, and immutable DTO support out of the box.

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