Libraries tagged by form input validation

Per-field language tabs for spatie/laravel-translatable in Filament 5. Every locale is a real input in the form state at the same time, so translations survive Repeater, Builder, ->relationship() repeaters, settings pages and custom pages without a model. No global locale switcher that loses repeater data, validation runs for every language, plus table columns and infolist entries that show the current language with a fallback to the default and any filled one.

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Handle form model bind, old input and validation error messages in a clean easy way.

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Automatically generate and handle input forms in PHP.

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Fast, dependency-free data validation for PHP with a string rule DSL, callable rules and localized error messages.

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A modern, extensible PHP library for validating primitive data types, files, nested objects, and arrays of objects with reusable and centralized validation rules.

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A Laravel-inspired validation wrapper for Symfony Validator with custom rules, error handling, and validated input support.

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A lightweight PHP validation library with fluent interface for validating data structures, supporting batch/fail-fast modes and custom strategies

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Text input field with validation for numeric values.

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Modern PHP validation library with fluent API and bulk validation support

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Data filtration library

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Password strength validation utilities for Yii2 application templates created by Nenad Z.

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Lightweight declarative validation — error codes, i18n-ready

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Seamlessly integrate attribute-based case mapping into Laravel FormRequests — transform keys and remap validation errors effortlessly.

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Model-driven form rendering and input validation

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Extension for Nette forms adding phone input with "libphonenumber" library validation.

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